mirror of
https://github.com/holub/mame
synced 2025-04-20 15:32:45 +03:00
Merge pull request #6068 from JoakimLarsson/alfaskop_pla
Alfaskop improvements
This commit is contained in:
Joakim Larsson Edström
GitHub
commit
7d5c59f6e5
@ -1895,6 +1895,18 @@ if (MACHINES["MC6843"]~=null) then
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}
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end
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---------------------------------------------------
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--
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--@src/devices/machine/mc6844.h,MACHINES["MC6844"] = true
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---------------------------------------------------
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if (MACHINES["MC6844"]~=null) then
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files {
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MAME_DIR .. "src/devices/machine/mc6844.cpp",
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MAME_DIR .. "src/devices/machine/mc6844.h",
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}
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end
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---------------------------------------------------
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--
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--@src/devices/machine/mc6846.h,MACHINES["MC6846"] = true
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@ -545,6 +545,7 @@ MACHINES["MC14411"] = true
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MACHINES["MC146818"] = true
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MACHINES["MC2661"] = true
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MACHINES["MC6843"] = true
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MACHINES["MC6844"] = true
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MACHINES["MC6846"] = true
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MACHINES["MC6852"] = true
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MACHINES["MC6854"] = true
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@ -2240,6 +2241,9 @@ files {
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MAME_DIR .. "src/mame/drivers/eispc.cpp",
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MAME_DIR .. "src/mame/machine/eispc_kb.cpp",
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MAME_DIR .. "src/mame/machine/eispc_kb.h",
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MAME_DIR .. "src/mame/drivers/alfaskop41xx.cpp",
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MAME_DIR .. "src/mame/machine/alfaskop_s41_kb.cpp",
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MAME_DIR .. "src/mame/machine/alfaskop_s41_kb.h",
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}
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createMESSProjects(_target, _subtarget, "exidy")
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@ -17,7 +17,8 @@
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#define LOG_SETUP 0x02
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#define LOG_CA1 0x08
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//#define VERBOSE (LOG_SETUP | LOG_GENERAL)
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//#define VERBOSE (LOG_SETUP | LOG_GENERAL | LOG_CA1)
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//#define LOG_OUTPUT_STREAM std::cout
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#include "logmacro.h"
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#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__)
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@ -596,7 +597,7 @@ void pia6821_device::send_to_out_a_func(const char* message)
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// input pins are pulled high
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const uint8_t data = get_out_a_value();
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LOG("PIA %s = %02X\n", message, data);
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LOG("PIA %s = %02X DDRA=%02x\n", message, data, m_ddr_a);
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if (!m_out_a_handler.isnull())
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{
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@ -621,7 +622,7 @@ void pia6821_device::send_to_out_b_func(const char* message)
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// input pins are high-impedance - we just send them as zeros for backwards compatibility
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const uint8_t data = get_out_b_value();
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LOG("PIA %s = %02X\n", message, data);
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LOG("PIA %s = %02X DDRB=%02x\n", message, data, m_ddr_b);
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if (!m_out_b_handler.isnull())
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{
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@ -646,6 +647,7 @@ void pia6821_device::port_a_w(uint8_t data)
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// buffer the output value
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m_out_a = data;
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LOGSETUP("PIA ");
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send_to_out_a_func("port A write");
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}
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@ -720,6 +722,9 @@ void pia6821_device::control_a_w(uint8_t data)
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data &= 0x3f;
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LOGSETUP("PIA control A write = %02X\n", data);
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LOGSETUP(" - CA1 interrupts %s\n", (data & 0x01) ? "enabled" : "disabled");
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LOGSETUP(" - CA1 interrupts active on %s transition\n", (data & 0x02) ? "low-to-high" : "high-to-low");
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LOGSETUP(" - Port A %s register selected\n", (data & 0x04) ? "Data" : "DDR");
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// update the control register
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m_ctl_a = data;
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@ -729,10 +734,17 @@ void pia6821_device::control_a_w(uint8_t data)
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{
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bool temp;
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if (c2_set_mode(m_ctl_a))
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{
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LOGSETUP(" - CA2 set/reset mode: ");
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temp = c2_set(m_ctl_a); // set/reset mode - bit value determines the new output
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}
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else
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{
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LOGSETUP(" - CA2 strobe mode: ");
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temp = true; // strobe mode - output is always high unless strobed
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}
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LOGSETUP("%d\n", temp);
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set_out_ca2(temp);
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}
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@ -751,16 +763,26 @@ void pia6821_device::control_b_w(uint8_t data)
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data &= 0x3f;
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LOGSETUP("PIA control B write = %02X\n", data);
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LOGSETUP(" - CB1 interrupts %s\n", (data & 0x01) ? "enabled" : "disabled");
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LOGSETUP(" - CB1 interrupts active on %s transition\n", (data & 0x02) ? "low-to-high" : "high-to-low");
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LOGSETUP(" - Port B %s register selected\n", (data & 0x04) ? "Data" : "DDR");
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// update the control register
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m_ctl_b = data;
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bool temp;
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if (c2_set_mode(m_ctl_b))
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{
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LOGSETUP(" - CB2 set/reset mode: ");
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temp = c2_set(m_ctl_b); // set/reset mode - bit value determines the new output
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}
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else
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{
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LOGSETUP(" - CB2 strobe mode: ");
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temp = true; // strobe mode - output is always high unless strobed
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}
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LOGSETUP("%d\n", temp);
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set_out_cb2(temp);
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// update externals
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@ -16,10 +16,15 @@
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MACROS
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***************************************************************************/
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//#define VERBOSE 1
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#define LOG_SETUP (1U << 1)
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//#define VERBOSE (LOG_GENERAL | LOG_SETUP)
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//#define LOG_OUTPUT_STREAM std::cout
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#include "logmacro.h"
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#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__)
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/***************************************************************************
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LOCAL VARIABLES
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***************************************************************************/
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@ -177,12 +182,14 @@ void acia6850_device::control_w(uint8_t data)
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// CR0 & CR1
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int counter_divide_select_bits = (data >> 0) & 3;
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m_divide = counter_divide_select[counter_divide_select_bits];
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LOGSETUP(" - Divide: x%d\n", counter_divide_select[counter_divide_select_bits]);
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// CR2, CR3 & CR4
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int word_select_bits = (data >> 2) & 7;
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m_bits = word_select[word_select_bits][0];
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m_parity = word_select[word_select_bits][1];
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m_stopbits = word_select[word_select_bits][2];
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LOGSETUP(" - %d%c%d\n", m_bits, m_parity == PARITY_NONE ? 'N' : (m_parity == PARITY_ODD ? 'O' : 'E'), m_stopbits);
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// CR5 & CR6
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int transmitter_control_bits = (data >> 5) & 3;
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@ -192,6 +199,7 @@ void acia6850_device::control_w(uint8_t data)
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// CR7
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m_rx_irq_enable = (data >> 7) & 1;
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LOGSETUP(" - RTS:%d BRK:%d TxIE:%d RxIE:%d\n", rts, m_brk, m_tx_irq_enable, m_rx_irq_enable);
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if (m_divide == 0)
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{
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561
src/devices/machine/mc6844.cpp
Normal file
561
src/devices/machine/mc6844.cpp
Normal file
@ -0,0 +1,561 @@
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// license:BSD-3-Clause
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// copyright-holders: Joakim Larsson Edström
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/**********************************************************************
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Motorola 6844 emulation. This code is not yet ready for general use, see TODO list below
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"MC6844 — Direct Memory Access Controller
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This DMAC works with an M6800 MPU Clock Pulse Generator and an I/O Peripheral Controller,
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such as the units described here, to facilitate direct access to the computer memory by
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the peripheral, thus by passing MPU interactive time delay.
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General Description
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The MC6844 is operable in three modes: HALT Burst, Cycle Steal and TSC Steal.
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In the Burst Mode, the MPU is halted by the first transfer request (TxRQ) input and
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is restarted when the Byte Count Register (BCR) is zero. Each data transfer is synchronized
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by a pulse input of TxRQ. In the Cycle Steal Mode, the MPU is halted by each TxRQ and
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is restarted after each one byte of data transferred. In the TSC Steal Mode, DMAC uses the
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three-state control function of the MPU to control the system bus. One byte of data is
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transferred during each DMA cycle.
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The DMAC has four channels. A Priority Control Register determines which of the channels
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is enabled. While data is being transferred on one channel, the other channels are inhibited.
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When one channel completes transferring, the next will become valid for DMA transfer. The PCR
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also utilizes a Rotate Control bit. Priority of DMA transfer is normally fixed in sequential
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order. The highest priority is in #0 Channel and the lowest is in #3. When this bit is in high
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level, channel priority is rotated such that the just-serviced channel has the lowest priority
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in the next DMA transfer."
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Source: https://en.wikipedia.org/wiki/File:Motorola_Microcomputer_Components_1978_pg13.jpg
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CREDITS & Prior Work:
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The base code was ripped out of swtpc09.cpp and deviceified but similar code is also to be found
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in exidy440.cpp so copyrigt is probably shared among the authors there: Robert Justice, 68bit and
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Aaron Giles.
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TODO:
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- Memory to Device transfers
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**********************************************************************/
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#include "emu.h"
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#include "mc6844.h"
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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#define LOG_SETUP (1U << 1)
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#define LOG_INT (1U << 2)
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#define LOG_STATE (1U << 3)
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#define LOG_TFR (1U << 4)
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//#define VERBOSE (LOG_GENERAL|LOG_SETUP | LOG_INT | LOG_STATE |LOG_TFR)
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//#define LOG_OUTPUT_STREAM std::cout
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#include "logmacro.h"
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#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__)
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#define LOGINT(...) LOGMASKED(LOG_INT, __VA_ARGS__)
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#define LOGSTATE(...) LOGMASKED(LOG_STATE, __VA_ARGS__)
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#define LOGTFR(...) LOGMASKED(LOG_TFR, __VA_ARGS__)
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#ifdef _MSC_VER
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#define FUNCNAME __func__
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#else
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#define FUNCNAME __PRETTY_FUNCTION__
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#endif
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// device type definition
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DEFINE_DEVICE_TYPE(MC6844, mc6844_device, "mc6844", "MC6844 DMA")
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// mc6844_device - constructor
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//-------------------------------------------------
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mc6844_device::mc6844_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, MC6844, tag, owner, clock)
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, device_execute_interface(mconfig, *this)
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, m_out_int_cb(*this)
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, m_out_txak_cb(*this)
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, m_out_drq1_cb(*this)
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, m_out_drq2_cb(*this)
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, m_in_memr_cb(*this)
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, m_out_memw_cb(*this)
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, m_in_ior_cb{ { *this },{ *this },{ *this },{ *this } }
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, m_out_iow_cb{ { *this },{ *this },{ *this },{ *this } }
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, m_state(STATE_S0)
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, m_icount(0)
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{
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}
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//-------------------------------------------------
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// device_resolve_objects - device-specific setup
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//-------------------------------------------------
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void mc6844_device::device_resolve_objects()
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{
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m_out_int_cb.resolve_safe();
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m_out_txak_cb.resolve_safe();
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m_out_drq1_cb.resolve_safe();
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m_out_drq2_cb.resolve_safe();
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m_in_memr_cb.resolve_safe(0);
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m_out_memw_cb.resolve_safe();
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for (auto &cb : m_in_ior_cb)
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cb.resolve_safe(0);
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for (auto &cb : m_out_iow_cb)
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cb.resolve_safe();
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void mc6844_device::device_start()
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{
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// set our instruction counter
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set_icountptr(m_icount);
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save_item(NAME(m_m6844_priority));
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save_item(NAME(m_m6844_interrupt));
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save_item(NAME(m_m6844_chain));
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save_item(NAME(m_state));
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save_item(NAME(m_icount));
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save_item(NAME(m_current_channel));
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save_item(NAME(m_last_channel));
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save_item(NAME(m_dgrnt));
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save_item(NAME(m_dreq));
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save_item(STRUCT_MEMBER( m_m6844_channel, active));
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save_item(STRUCT_MEMBER( m_m6844_channel, address));
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save_item(STRUCT_MEMBER( m_m6844_channel, counter));
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save_item(STRUCT_MEMBER( m_m6844_channel, control));
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save_item(STRUCT_MEMBER( m_m6844_channel, start_address));
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save_item(STRUCT_MEMBER( m_m6844_channel, start_counter));
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void mc6844_device::device_reset()
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{
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// reset the 6844
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for (int i = 0; i < 4; i++)
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{
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m_m6844_channel[i].active = 0;
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m_m6844_channel[i].control = 0x00;
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}
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m_m6844_priority = 0x00;
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m_m6844_interrupt = 0x00;
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m_m6844_chain = 0x00;
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m_state = STATE_SI;
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}
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//-------------------------------------------------
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// dma_request -
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//-------------------------------------------------
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void mc6844_device::dma_request(int channel, int state)
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{
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LOG("MC6844 Channel %u DMA Request: %u\n", channel, state);
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m_dreq[channel & 3] = state;
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LOGSTATE("Trigger(1)\n");
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trigger(1);
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}
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//-------------------------------------------------
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// execute_run -
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//-------------------------------------------------
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void mc6844_device::execute_run()
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{
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do
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{
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switch (m_state)
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{
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case STATE_SI: // IDLE state, will suspend until a DMA request comes through
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{ // Hi ------> Lo
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int const priorities[][4] = {{ 1, 2, 3, 0 },
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{ 2, 3, 0, 1 },
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{ 3, 0, 1, 2 },
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{ 0, 1, 2, 3 }};
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LOGSTATE("DMA state SI\n");
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for (int prio = 0; prio < 4; prio++)
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{
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// Rotating or static channel prioritizations
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int current_channel = priorities[((m_m6844_priority & 0x80) ? m_last_channel : 3) & 3][prio];
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if (m_m6844_channel[current_channel].active == 1 && m_dreq[current_channel] == ASSERT_LINE)
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{
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m_current_channel = m_last_channel = current_channel;
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m_state = STATE_S0;
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break;
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}
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}
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}
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if(m_state == STATE_SI)
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{
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LOGSTATE("Suspend in SI\n");
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suspend_until_trigger(1, true);
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m_icount = 0;
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}
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break;
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case STATE_S0: // Wait for BCR != 0 and Tx EN == 1
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LOGSTATE("DMA state S0\n");
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if (m_m6844_channel[m_current_channel].active == 1 &&
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m_m6844_channel[m_current_channel].counter != 0)
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{
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m_state = STATE_S1;
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}
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else
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{
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LOGSTATE("Suspend in S0\n");
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suspend_until_trigger(1, true);
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m_icount = 0;
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}
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break;
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case STATE_S1: // Wait for Tx RQ == 1
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LOGSTATE("DMA state S1\n");
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if (m_dreq[m_current_channel] == ASSERT_LINE)
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{
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m_state = STATE_S2;
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switch(m_m6844_channel[m_current_channel].control & 0x06)
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{
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case 0x00: // Mode 2 - single-byte transfer HALT steal mode
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case 0x02: // Mode 3 - block transfer mode
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m_out_drq2_cb(ASSERT_LINE);
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break;
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case 0x04: // Mode 1 - single-byte transfer TSC steal mode
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m_out_drq1_cb(ASSERT_LINE);
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break;
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default:
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m_out_drq1_cb(CLEAR_LINE);
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m_out_drq2_cb(CLEAR_LINE);
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break;
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}
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}
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else
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{
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LOGSTATE("Suspend in S1\n");
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suspend_until_trigger(1, true);
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m_icount = 0;
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}
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break;
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case STATE_S2: // Wait for DGRNT == 1
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LOGSTATE("DMA state S2\n");
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if (m_dgrnt == ASSERT_LINE && m_dreq[m_current_channel] == ASSERT_LINE)
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{
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m_out_txak_cb(m_current_channel);
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if (m_m6844_channel[m_current_channel].active == 1) //active dma transfer
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{
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if (!(m_m6844_channel[m_current_channel].control & 0x01))
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{
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uint8_t data = m_in_ior_cb[m_current_channel]();
|
||||
LOGTFR("DMA%d from device to memory location %04x: <- %02x\n", m_current_channel, m_m6844_channel[m_current_channel].address, data );
|
||||
m_out_memw_cb(m_m6844_channel[m_current_channel].address, data);
|
||||
}
|
||||
else // dma write to device from memory
|
||||
{
|
||||
uint8_t data = 0;
|
||||
//uint8_t data = m_in_memr_cb(m_m6844_channel[m_current_channel].address);
|
||||
LOGTFR("DMA from memory location to device %04x: -> %02x\n", m_m6844_channel[m_current_channel].address, data );
|
||||
//m_out_iow_cb[m_current_channel](data);
|
||||
}
|
||||
|
||||
if (m_m6844_channel[m_current_channel].control & 0x08)
|
||||
{
|
||||
m_m6844_channel[m_current_channel].address--;
|
||||
}
|
||||
else
|
||||
{
|
||||
m_m6844_channel[m_current_channel].address++;
|
||||
}
|
||||
|
||||
m_m6844_channel[m_current_channel].counter--;
|
||||
|
||||
if (m_m6844_channel[m_current_channel].counter == 0)
|
||||
{
|
||||
m_out_drq1_cb(CLEAR_LINE);
|
||||
m_out_drq2_cb(CLEAR_LINE);
|
||||
m_m6844_channel[m_current_channel].control |= 0x80;
|
||||
m6844_update_interrupt();
|
||||
m_state = STATE_SI;
|
||||
}
|
||||
else
|
||||
{
|
||||
switch(m_m6844_channel[m_current_channel].control & 0x06)
|
||||
{
|
||||
case 0x00:
|
||||
LOGTFR("Mode 2 - single-byte transfer HALT steal mode\n");
|
||||
m_state = STATE_S1;
|
||||
m_out_drq2_cb(CLEAR_LINE);
|
||||
break;
|
||||
case 0x02:
|
||||
LOGTFR("Mode 3 - block transfer mode\n");
|
||||
m_state = STATE_S2; // Just for clarity, we are still in STATE_S2
|
||||
break;
|
||||
case 0x04:
|
||||
LOGTFR("Mode 1 - single-byte transfer TSC steal mode\n");
|
||||
m_state = STATE_S1;
|
||||
m_out_drq1_cb(CLEAR_LINE);
|
||||
break;
|
||||
default: // Undefined - needs verification on real hardware
|
||||
logerror("MC6844: undefined transfer mode, clearing DMA request\n");
|
||||
m_state = STATE_SI;
|
||||
m_out_drq1_cb(CLEAR_LINE);
|
||||
m_out_drq2_cb(CLEAR_LINE);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
LOGSTATE("Suspend in S2\n");
|
||||
suspend_until_trigger(1, true);
|
||||
m_icount = 0;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
logerror("MC6844: bad state, please report error\n");
|
||||
break;
|
||||
}
|
||||
m_icount--;
|
||||
} while (m_icount > 0);
|
||||
}
|
||||
|
||||
//**************************************************************************
|
||||
// READ/WRITE HANDLERS
|
||||
//**************************************************************************
|
||||
|
||||
//-------------------------------------------------
|
||||
// read handler
|
||||
//-------------------------------------------------
|
||||
|
||||
uint8_t mc6844_device::read(offs_t offset)
|
||||
{
|
||||
uint8_t result = 0;
|
||||
|
||||
// switch off the offset we were given
|
||||
switch (offset)
|
||||
{
|
||||
// upper byte of address
|
||||
case 0x00:
|
||||
case 0x04:
|
||||
case 0x08:
|
||||
case 0x0c:
|
||||
result = m_m6844_channel[offset / 4].address >> 8;
|
||||
break;
|
||||
|
||||
// lower byte of address
|
||||
case 0x01:
|
||||
case 0x05:
|
||||
case 0x09:
|
||||
case 0x0d:
|
||||
result = m_m6844_channel[offset / 4].address & 0xff;
|
||||
break;
|
||||
|
||||
// upper byte of counter
|
||||
case 0x02:
|
||||
case 0x06:
|
||||
case 0x0a:
|
||||
case 0x0e:
|
||||
result = m_m6844_channel[offset / 4].counter >> 8;
|
||||
break;
|
||||
|
||||
// lower byte of counter
|
||||
case 0x03:
|
||||
case 0x07:
|
||||
case 0x0b:
|
||||
case 0x0f:
|
||||
result = m_m6844_channel[offset / 4].counter & 0xff;
|
||||
break;
|
||||
|
||||
// channel control
|
||||
case 0x10:
|
||||
case 0x11:
|
||||
case 0x12:
|
||||
case 0x13:
|
||||
result = m_m6844_channel[offset - 0x10].control;
|
||||
|
||||
// A read here clears the 'DMA end' flag of the
|
||||
// associated channel.
|
||||
if (!machine().side_effects_disabled())
|
||||
{
|
||||
m_m6844_channel[offset - 0x10].control &= ~0x80;
|
||||
if (m_m6844_interrupt & 0x80)
|
||||
m6844_update_interrupt();
|
||||
}
|
||||
break;
|
||||
|
||||
// priority control
|
||||
case 0x14:
|
||||
result = m_m6844_priority;
|
||||
break;
|
||||
|
||||
// interrupt control
|
||||
case 0x15:
|
||||
result = m_m6844_interrupt;
|
||||
break;
|
||||
|
||||
// chaining control
|
||||
case 0x16:
|
||||
result = m_m6844_chain;
|
||||
break;
|
||||
|
||||
// 0x17-0x1f not used
|
||||
default: break;
|
||||
}
|
||||
|
||||
return result & 0xff;
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// write() handler
|
||||
//-------------------------------------------------
|
||||
|
||||
void mc6844_device::write(offs_t offset, uint8_t data)
|
||||
{
|
||||
int i;
|
||||
LOGSETUP("DMA write %02x: %02x\n", offset, data);
|
||||
// switch off the offset we were given
|
||||
switch (offset)
|
||||
{
|
||||
// upper byte of address
|
||||
case 0x00:
|
||||
case 0x04:
|
||||
case 0x08:
|
||||
case 0x0c:
|
||||
LOGSETUP(" - upper address byte ch %d: %02x\n", offset / 4, data);
|
||||
m_m6844_channel[offset / 4].address = (m_m6844_channel[offset / 4].address & 0xff) | (data << 8);
|
||||
break;
|
||||
|
||||
// lower byte of address
|
||||
case 0x01:
|
||||
case 0x05:
|
||||
case 0x09:
|
||||
case 0x0d:
|
||||
LOGSETUP(" - lower address byte ch %d: %02x\n", offset / 4, data);
|
||||
m_m6844_channel[offset / 4].address = (m_m6844_channel[offset / 4].address & 0xff00) | (data & 0xff);
|
||||
break;
|
||||
|
||||
// upper byte of counter
|
||||
case 0x02:
|
||||
case 0x06:
|
||||
case 0x0a:
|
||||
case 0x0e:
|
||||
LOGSETUP(" - upper counter byte ch %d: %02x\n", offset / 4, data);
|
||||
m_m6844_channel[offset / 4].counter = (m_m6844_channel[offset / 4].counter & 0xff) | (data << 8);
|
||||
break;
|
||||
|
||||
// lower byte of counter
|
||||
case 0x03:
|
||||
case 0x07:
|
||||
case 0x0b:
|
||||
case 0x0f:
|
||||
LOGSETUP(" - lower counter byte ch %d: %02x\n", offset / 4, data);
|
||||
m_m6844_channel[offset / 4].counter = (m_m6844_channel[offset / 4].counter & 0xff00) | (data & 0xff);
|
||||
break;
|
||||
|
||||
// channel control
|
||||
case 0x10:
|
||||
case 0x11:
|
||||
case 0x12:
|
||||
case 0x13:
|
||||
LOGSETUP(" - control byte ch %d: %02x\n", offset / 4, data);
|
||||
m_m6844_channel[offset - 0x10].control = (m_m6844_channel[offset - 0x10].control & 0xc0) | (data & 0x3f);
|
||||
break;
|
||||
|
||||
// priority control
|
||||
case 0x14:
|
||||
LOGSETUP(" - priority byte: %02x\n", data);
|
||||
m_m6844_priority = data;
|
||||
|
||||
// update each channel
|
||||
for (i = 0; i < 4; i++)
|
||||
{
|
||||
// if we're going active...
|
||||
if (!m_m6844_channel[i].active && (data & (1 << i)))
|
||||
{
|
||||
// mark us active
|
||||
m_m6844_channel[i].active = 1;
|
||||
|
||||
// set the DMA busy bit and clear the DMA end bit
|
||||
m_m6844_channel[i].control |= 0x40;
|
||||
m_m6844_channel[i].control &= ~0x80;
|
||||
|
||||
// set the starting address, counter, and time
|
||||
m_m6844_channel[i].start_address = m_m6844_channel[i].address;
|
||||
m_m6844_channel[i].start_counter = m_m6844_channel[i].counter;
|
||||
}
|
||||
|
||||
// if we're going inactive...
|
||||
else if (m_m6844_channel[i].active && !(data & (1 << i)))
|
||||
{
|
||||
//mark us inactive
|
||||
m_m6844_channel[i].active = 0;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
// interrupt control
|
||||
case 0x15:
|
||||
LOGSETUP(" - interrupt control: %02x\n", data);
|
||||
m_m6844_interrupt = (m_m6844_interrupt & 0x80) | (data & 0x7f);
|
||||
m6844_update_interrupt();
|
||||
break;
|
||||
|
||||
// chaining control
|
||||
case 0x16:
|
||||
LOGSETUP(" - chaining control: %02x\n", data);
|
||||
m_m6844_chain = data;
|
||||
break;
|
||||
|
||||
// 0x17-0x1f not used
|
||||
default: break;
|
||||
}
|
||||
LOGSTATE("Trigger(1)\n");
|
||||
trigger(1);
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// m6844_update_interrupt()
|
||||
//-------------------------------------------------
|
||||
|
||||
void mc6844_device::m6844_update_interrupt()
|
||||
{
|
||||
uint8_t interrupt = 0;
|
||||
|
||||
interrupt |= BIT(m_m6844_channel[0].control, 7) & BIT(m_m6844_interrupt, 0);
|
||||
interrupt |= BIT(m_m6844_channel[1].control, 7) & BIT(m_m6844_interrupt, 1);
|
||||
interrupt |= BIT(m_m6844_channel[2].control, 7) & BIT(m_m6844_interrupt, 2);
|
||||
interrupt |= BIT(m_m6844_channel[3].control, 7) & BIT(m_m6844_interrupt, 3);
|
||||
|
||||
if (interrupt)
|
||||
{
|
||||
if (!(m_m6844_interrupt & 0x80))
|
||||
{
|
||||
// Set interrupt indication bit 7.
|
||||
m_m6844_interrupt |= 0x80;
|
||||
m_out_int_cb(ASSERT_LINE);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (m_m6844_interrupt & 0x80)
|
||||
{
|
||||
// Clear interrupt indication bit 7.
|
||||
m_m6844_interrupt &= 0x7f;
|
||||
m_out_int_cb(CLEAR_LINE);
|
||||
}
|
||||
}
|
||||
}
|
||||
148
src/devices/machine/mc6844.h
Normal file
148
src/devices/machine/mc6844.h
Normal file
@ -0,0 +1,148 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders: Joakim Larsson Edström
|
||||
/***************************************************************************
|
||||
|
||||
Motorola 6844 emulation
|
||||
|
||||
****************************************************************************
|
||||
_____ _____
|
||||
VSS 1 |* \_/ | 40 E
|
||||
*CS / Tx AKBW 2 | | 39 *RESET
|
||||
R / *W 3 | | 38 DGRNT
|
||||
A0 4 | | 37 *DRQ1
|
||||
A1 5 | | 36 *DRQ2
|
||||
A2 6 | | 35 Tx AKA
|
||||
A3 7 | | 34 *TX STB
|
||||
A4 8 | | 33 *IRQ / *DEND
|
||||
A5 9 | | 32 Tx RQ0
|
||||
A6 10 | MC6844 | 31 Tx RQ1
|
||||
A7 11 | | 30 Tx RQ2
|
||||
A8 12 | | 29 Tx RQ3
|
||||
A9 13 | | 28 D0
|
||||
A10 14 | | 27 D1
|
||||
A11 15 | | 26 D2
|
||||
A12 16 | | 25 D3
|
||||
A13 17 | | 24 D4
|
||||
A14 18 | | 23 D5
|
||||
A15 19 | | 22 D6
|
||||
VCC 20 |_____________| 21 D7
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
#ifndef MAME_MACHINE_MC6844_H
|
||||
#define MAME_MACHINE_MC6844_H
|
||||
|
||||
#pragma once
|
||||
|
||||
//**************************************************************************
|
||||
// INTERFACE CONFIGURATION MACROS
|
||||
//**************************************************************************
|
||||
|
||||
//**************************************************************************
|
||||
// TYPE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
// ======================> mc6844_device
|
||||
|
||||
class mc6844_device : public device_t, public device_execute_interface
|
||||
{
|
||||
public:
|
||||
// construction/destruction
|
||||
mc6844_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
|
||||
|
||||
auto out_int_callback() { return m_out_int_cb.bind(); }
|
||||
auto out_txak_callback() { return m_out_txak_cb.bind(); }
|
||||
auto out_drq1_callback() { return m_out_drq1_cb.bind(); }
|
||||
auto out_drq2_callback() { return m_out_drq2_cb.bind(); }
|
||||
auto in_memr_callback() { return m_in_memr_cb.bind(); }
|
||||
auto out_memw_callback() { return m_out_memw_cb.bind(); }
|
||||
|
||||
// I/O operations
|
||||
void write(offs_t offset, uint8_t data);
|
||||
uint8_t read(offs_t offset);
|
||||
template <unsigned CH> auto in_ior_callback() { return m_in_ior_cb[CH].bind(); }
|
||||
template <unsigned CH> auto out_iow_callback() { return m_out_iow_cb[CH].bind(); }
|
||||
|
||||
template <unsigned CH> DECLARE_WRITE_LINE_MEMBER( dreq_w ) { dma_request(CH, state); }
|
||||
|
||||
DECLARE_WRITE_LINE_MEMBER( dgrnt_w ){ m_dgrnt = state; trigger(1); }
|
||||
|
||||
protected:
|
||||
// device-level overrides
|
||||
//virtual void device_validity_check(validity_checker &valid) const override;
|
||||
virtual void device_resolve_objects() override;
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
virtual void execute_run() override;
|
||||
|
||||
devcb_write_line m_out_int_cb;
|
||||
devcb_write8 m_out_txak_cb;
|
||||
devcb_write_line m_out_drq1_cb;
|
||||
devcb_write_line m_out_drq2_cb;
|
||||
devcb_read8 m_in_memr_cb;
|
||||
devcb_write8 m_out_memw_cb;
|
||||
devcb_read8 m_in_ior_cb[4];
|
||||
devcb_write8 m_out_iow_cb[4];
|
||||
|
||||
/* channel_data structure holds info about each 6844 DMA channel */
|
||||
struct m6844_channel_data
|
||||
{
|
||||
int active;
|
||||
int address;
|
||||
int counter;
|
||||
// Channel control register.
|
||||
// bit 0: Read / Write mode
|
||||
// bit 1: Mode control B
|
||||
// bit 2: Mode control A
|
||||
// bit 3: Address up (0) / down (1).
|
||||
// bit 4: Not used
|
||||
// bit 5: Not used
|
||||
// bit 6: Busy / Ready. Read only. Set when request
|
||||
// made. Cleared when transfer completed.
|
||||
// bit 7: DMA end flag. Read only? Set when transfer
|
||||
// completed. Cleared when control register
|
||||
// read. Sets IRQ.
|
||||
// Mode control A,B: 0,0 Mode2; 0,1 Mode 3; 1,0 Mode 0;
|
||||
// 1,1 Undefined.
|
||||
uint8_t control;
|
||||
int start_address;
|
||||
int start_counter;
|
||||
};
|
||||
|
||||
/* 6844 description */
|
||||
m6844_channel_data m_m6844_channel[4];
|
||||
uint8_t m_m6844_priority;
|
||||
// Interrupt control register.
|
||||
// Bit 0-3: channel interrupt enable, 1 enabled, 0 masked.
|
||||
// Bit 4-6: unused
|
||||
// Bit 7: Read only. Set to 1 when IRQ asserted. Clear when the
|
||||
// control register associated with the channel that caused the
|
||||
// interrut is read.
|
||||
uint8_t m_m6844_interrupt;
|
||||
uint8_t m_m6844_chain;
|
||||
void m6844_update_interrupt();
|
||||
|
||||
// State machine
|
||||
enum {
|
||||
STATE_SI,
|
||||
STATE_S0,
|
||||
STATE_S1,
|
||||
STATE_S2
|
||||
};
|
||||
|
||||
int m_state;
|
||||
int m_icount;
|
||||
int m_current_channel;
|
||||
int m_last_channel;
|
||||
|
||||
// input states
|
||||
bool m_dgrnt;
|
||||
bool m_dreq[4];
|
||||
private:
|
||||
void dma_request(int channel, int state);
|
||||
};
|
||||
|
||||
// device type definition
|
||||
DECLARE_DEVICE_TYPE(MC6844, mc6844_device)
|
||||
|
||||
#endif // MAME_MACHINE_MC6844_H
|
||||
@ -24,6 +24,8 @@
|
||||
#include "mc6846.h"
|
||||
|
||||
//#define VERBOSE 1
|
||||
//#define LOG_OUTPUT_STREAM std::cout
|
||||
|
||||
#include "logmacro.h"
|
||||
|
||||
|
||||
@ -47,7 +49,6 @@ DEFINE_DEVICE_TYPE(MC6846, mc6846_device, "mc6846", "MC6846 Programmable Timer")
|
||||
mc6846_device::mc6846_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
|
||||
: device_t(mconfig, MC6846, tag, owner, clock),
|
||||
m_out_port_cb(*this),
|
||||
m_out_cp1_cb(*this),
|
||||
m_out_cp2_cb(*this),
|
||||
m_in_port_cb(*this),
|
||||
m_out_cto_cb(*this),
|
||||
@ -65,7 +66,6 @@ void mc6846_device::device_start()
|
||||
m_one_shot = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(mc6846_device::timer_one_shot), this));
|
||||
|
||||
m_out_port_cb.resolve(); /* 8-bit output */
|
||||
m_out_cp1_cb.resolve_safe(); /* 1-bit output */
|
||||
m_out_cp2_cb.resolve(); /* 1-bit output */
|
||||
|
||||
/* CPU read from the outside through chip */
|
||||
@ -354,6 +354,7 @@ READ8_MEMBER(mc6846_device::read)
|
||||
|
||||
WRITE8_MEMBER(mc6846_device::write)
|
||||
{
|
||||
|
||||
switch ( offset )
|
||||
{
|
||||
case 0:
|
||||
|
||||
@ -21,7 +21,6 @@ public:
|
||||
|
||||
auto out_port() { return m_out_port_cb.bind(); }
|
||||
auto in_port() { return m_in_port_cb.bind(); }
|
||||
auto cp1() { return m_out_cp1_cb.bind(); }
|
||||
auto cp2() { return m_out_cp2_cb.bind(); }
|
||||
auto cto() { return m_out_cto_cb.bind(); }
|
||||
auto irq() { return m_irq_cb.bind(); }
|
||||
@ -78,7 +77,6 @@ private:
|
||||
|
||||
/* CPU write to the outside through chip */
|
||||
devcb_write8 m_out_port_cb; /* 8-bit output */
|
||||
devcb_write_line m_out_cp1_cb; /* 1-bit output */
|
||||
devcb_write_line m_out_cp2_cb; /* 1-bit output */
|
||||
|
||||
/* CPU read from the outside through chip */
|
||||
|
||||
@ -22,7 +22,6 @@
|
||||
|
||||
TODO:
|
||||
- CRC
|
||||
- DMA mode
|
||||
- loop mode
|
||||
- status prioritization
|
||||
- NRZI vs. NRZ coding
|
||||
@ -34,9 +33,18 @@
|
||||
#include "emu.h"
|
||||
#include "mc6854.h"
|
||||
|
||||
//#define VERBOSE 1
|
||||
#define LOG_SETUP ( 1U << 1 )
|
||||
#define LOG_BITS ( 1U << 2 )
|
||||
#define LOG_IRQ ( 1U << 3 )
|
||||
|
||||
//#define VERBOSE (LOG_IRQ | LOG_BITS | LOG_GENERAL | LOG_SETUP)
|
||||
//#define LOG_OUTPUT_STREAM std::cout
|
||||
|
||||
#include "logmacro.h"
|
||||
|
||||
#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__)
|
||||
#define LOGBITS(...) LOGMASKED(LOG_BITS, __VA_ARGS__)
|
||||
#define LOGIRQ(...) LOGMASKED(LOG_IRQ, __VA_ARGS__)
|
||||
|
||||
|
||||
/******************* parameters ******************/
|
||||
@ -66,6 +74,9 @@ constexpr unsigned mc6854_device::MAX_FRAME_LENGTH;
|
||||
#define RIE ( m_cr1 & 2 ) /* interrupt enable */
|
||||
#define TIE ( m_cr1 & 4 )
|
||||
|
||||
#define RDSR ( m_cr1 & 8 ) /* DMA mode */
|
||||
#define TDSR ( m_cr1 & 0x10 )
|
||||
|
||||
#define DISCONTINUE ( m_cr1 & 0x20 ) /* discontinue received frame */
|
||||
|
||||
|
||||
@ -131,6 +142,8 @@ DEFINE_DEVICE_TYPE(MC6854, mc6854_device, "mc6854", "Motorola MC6854 ADLC")
|
||||
mc6854_device::mc6854_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
|
||||
device_t(mconfig, MC6854, tag, owner, clock),
|
||||
m_out_irq_cb(*this),
|
||||
m_out_rdsr_cb(*this),
|
||||
m_out_tdsr_cb(*this),
|
||||
m_out_txd_cb(*this),
|
||||
m_out_frame_cb(*this),
|
||||
m_out_rts_cb(*this),
|
||||
@ -150,6 +163,8 @@ mc6854_device::mc6854_device(const machine_config &mconfig, const char *tag, dev
|
||||
m_rreg(0),
|
||||
m_rones(0),
|
||||
m_rsize(0),
|
||||
m_rxd(0),
|
||||
m_rxc(0),
|
||||
m_flen(0),
|
||||
m_fpos(0)
|
||||
{
|
||||
@ -172,6 +187,8 @@ mc6854_device::mc6854_device(const machine_config &mconfig, const char *tag, dev
|
||||
void mc6854_device::device_start()
|
||||
{
|
||||
m_out_irq_cb.resolve_safe();
|
||||
m_out_rdsr_cb.resolve_safe();
|
||||
m_out_tdsr_cb.resolve_safe();
|
||||
m_out_txd_cb.resolve();
|
||||
m_out_frame_cb.resolve();
|
||||
m_out_rts_cb.resolve_safe();
|
||||
@ -391,6 +408,7 @@ TIMER_CALLBACK_MEMBER(mc6854_device::tfifo_cb)
|
||||
/* data underrun => abort */
|
||||
logerror( "%f mc6854_tfifo_cb: FIFO underrun\n", machine().time().as_double() );
|
||||
m_sr1 |= TU;
|
||||
update_sr1();
|
||||
m_tstate = 0;
|
||||
send_bits( 0xffff, ABTEX ? 16 : 8, 0 );
|
||||
m_flen = 0;
|
||||
@ -514,10 +532,10 @@ void mc6854_device::rfifo_push( uint8_t d )
|
||||
}
|
||||
|
||||
m_rsize -= blen;
|
||||
update_sr1( );
|
||||
}
|
||||
|
||||
|
||||
|
||||
void mc6854_device::rfifo_terminate( )
|
||||
{
|
||||
/* mark most recently pushed byte as the last one of the frame */
|
||||
@ -526,7 +544,7 @@ void mc6854_device::rfifo_terminate( )
|
||||
{
|
||||
if ( m_rfifo[ i ] & 0x100 )
|
||||
{
|
||||
m_tfifo[ i ] |= 0x200;
|
||||
m_rfifo[ i ] |= 0x200;
|
||||
break;
|
||||
}
|
||||
|
||||
@ -537,7 +555,6 @@ void mc6854_device::rfifo_terminate( )
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* CPU pops the FIFO */
|
||||
uint8_t mc6854_device::rfifo_pop( )
|
||||
{
|
||||
@ -566,70 +583,9 @@ uint8_t mc6854_device::rfifo_pop( )
|
||||
}
|
||||
|
||||
|
||||
/* MC6854 makes fields from bits */
|
||||
WRITE_LINE_MEMBER( mc6854_device::set_rx )
|
||||
{
|
||||
int fieldlen = ( m_rstate < 6 ) ? 8 : RWL;
|
||||
|
||||
if ( RRESET || (m_sr2 & DCD) )
|
||||
return;
|
||||
|
||||
if ( state )
|
||||
{
|
||||
m_rones++;
|
||||
m_rreg = (m_rreg >> 1) | 0x80000000;
|
||||
if ( m_rones >= 8 )
|
||||
{
|
||||
/* abort */
|
||||
m_rstate = 0;
|
||||
m_rsize = 0;
|
||||
if ( m_rstate > 1 )
|
||||
{
|
||||
/* only in-frame abort */
|
||||
m_sr2 |= RABT;
|
||||
LOG( "%f mc6854_receive_bit: abort\n", machine().time().as_double() );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
m_rsize++;
|
||||
if ( m_rstate && m_rsize >= fieldlen + 24 )
|
||||
rfifo_push( m_rreg );
|
||||
}
|
||||
}
|
||||
else if ( m_rones == 5 )
|
||||
{
|
||||
/* discards '0' inserted after 5 '1' */
|
||||
m_rones = 0;
|
||||
return;
|
||||
}
|
||||
else if ( m_rones == 6 )
|
||||
{
|
||||
/* flag */
|
||||
if ( FDSE )
|
||||
m_sr1 |= FD;
|
||||
|
||||
if ( m_rstate > 1 )
|
||||
{
|
||||
/* end of frame */
|
||||
m_rreg >>= 1;
|
||||
m_rsize++;
|
||||
if ( m_rsize >= fieldlen + 24 ) /* last field */
|
||||
rfifo_push( m_rreg );
|
||||
rfifo_terminate( );
|
||||
LOG( "%f mc6854_receive_bit: end of frame\n", machine().time().as_double() );
|
||||
}
|
||||
m_rones = 0;
|
||||
m_rstate = 1;
|
||||
m_rsize = 0;
|
||||
} else
|
||||
{
|
||||
m_rones = 0;
|
||||
m_rreg >>= 1;
|
||||
m_rsize++;
|
||||
if ( m_rstate && m_rsize >= fieldlen + 24 )
|
||||
rfifo_push( m_rreg );
|
||||
}
|
||||
m_rxd = state;
|
||||
}
|
||||
|
||||
|
||||
@ -663,7 +619,10 @@ int mc6854_device::send_frame( uint8_t* data, int len )
|
||||
}
|
||||
memcpy( m_frame, data, len );
|
||||
if ( FDSE )
|
||||
{
|
||||
m_sr1 |= FD;
|
||||
update_sr1();
|
||||
}
|
||||
m_flen = len;
|
||||
m_fpos = 0;
|
||||
rfifo_push( m_frame[ m_fpos++ ] );
|
||||
@ -689,6 +648,7 @@ WRITE_LINE_MEMBER( mc6854_device::set_cts )
|
||||
m_sr1 |= CTS;
|
||||
else
|
||||
m_sr1 &= ~CTS;
|
||||
update_sr1();
|
||||
}
|
||||
|
||||
|
||||
@ -715,7 +675,7 @@ void mc6854_device::update_sr2( )
|
||||
m_sr2 |= RDA2;
|
||||
if ( ! (m_rfifo[ FIFO_SIZE - 1 ] & 0x100) )
|
||||
m_sr2 &= ~RDA2;
|
||||
else if ( TWOBYTES && ! (m_tfifo[ FIFO_SIZE - 2 ] & 0x100) )
|
||||
else if ( TWOBYTES && ! (m_rfifo[ FIFO_SIZE - 2 ] & 0x100) )
|
||||
m_sr2 &= ~RDA2;
|
||||
|
||||
/* update AP */
|
||||
@ -737,7 +697,7 @@ void mc6854_device::update_sr1( )
|
||||
else
|
||||
m_sr1 &= ~S2RQ;
|
||||
|
||||
/* update TRDA (always prioritized by CTS) */
|
||||
/* update TDRA (always prioritized by CTS) */
|
||||
if ( TRESET || ( m_sr1 & CTS ) )
|
||||
m_sr1 &= ~TDRA;
|
||||
else
|
||||
@ -756,18 +716,28 @@ void mc6854_device::update_sr1( )
|
||||
m_sr1 &= ~RDA;
|
||||
|
||||
/* update IRQ */
|
||||
LOGIRQ("\nUpdate IRQ in: %d\n", (m_sr1 & IRQ) ? 1 : 0);
|
||||
m_sr1 &= ~IRQ;
|
||||
if ( RIE && (m_sr1 & (TU | TDRA) ) )
|
||||
m_sr1 |= IRQ;
|
||||
if ( TIE )
|
||||
{
|
||||
if ( m_sr1 & (S2RQ | RDA | CTS) )
|
||||
m_sr1 |= IRQ;
|
||||
if ( m_sr2 & (ERR | FV | DCD | OVRN | RABT | RIDLE | AP) )
|
||||
m_sr1 |= IRQ;
|
||||
if ( m_sr1 & TU ) m_sr1 |= IRQ;
|
||||
LOGIRQ(" - Update IRQ TU: %d\n", (m_sr1 & IRQ) ? 1 : 0);
|
||||
if ( ( m_sr1 & TDRA ) && !TDSR ) m_sr1 |= IRQ; // TDRA will not cause interrupt if in DMA mode
|
||||
LOGIRQ(" - Update IRQ TDRA: %d\n", (m_sr1 & IRQ) ? 1 : 0);
|
||||
}
|
||||
if ( RIE )
|
||||
{
|
||||
if ( m_sr1 & (S2RQ | CTS) ) m_sr1 |= IRQ;
|
||||
LOGIRQ(" - Update IRQ S2RQ(%02x)|CTS(%d): %d\n", (m_sr2 & 0x7f), (m_sr1 & CTS) ? 1 : 0, (m_sr1 & IRQ) ? 1 : 0);
|
||||
if ( ( m_sr1 & RDA ) && !RDSR ) m_sr1 |= IRQ; // RDA will not cause interrupt if in DMA mode
|
||||
LOGIRQ(" - Update IRQ RDA(%d) && !RDSR(%d): %d\n", (m_sr1 & RDA) ? 1 : 0, RDSR ? 1 : 0, (m_sr1 & IRQ) ? 1 : 0);
|
||||
if ( m_sr2 & (ERR | FV | DCD | OVRN | RABT | RIDLE | AP) ) m_sr1 |= IRQ;
|
||||
LOGIRQ(" - Update IRQ ERR: %d\n", (m_sr1 & IRQ) ? 1 : 0);
|
||||
}
|
||||
|
||||
m_out_irq_cb((m_sr1 & IRQ) ? ASSERT_LINE : CLEAR_LINE);
|
||||
m_out_rdsr_cb((m_sr1 & RDA) ? ASSERT_LINE : CLEAR_LINE);
|
||||
m_out_tdsr_cb((m_sr1 & TDRA) ? ASSERT_LINE : CLEAR_LINE);
|
||||
}
|
||||
|
||||
|
||||
@ -777,7 +747,7 @@ uint8_t mc6854_device::read(offs_t offset)
|
||||
switch ( offset )
|
||||
{
|
||||
case 0: /* status register 1 */
|
||||
update_sr1( );
|
||||
//update_sr1( );
|
||||
LOG( "%f %s mc6854_r: get SR1=$%02X (rda=%i,s2rq=%i,fd=%i,cts=%i,tu=%i,tdra=%i,irq=%i)\n",
|
||||
machine().time().as_double(), machine().describe_context(), m_sr1,
|
||||
( m_sr1 & RDA) ? 1 : 0, ( m_sr1 & S2RQ) ? 1 : 0,
|
||||
@ -787,7 +757,7 @@ uint8_t mc6854_device::read(offs_t offset)
|
||||
return m_sr1;
|
||||
|
||||
case 1: /* status register 2 */
|
||||
update_sr2( );
|
||||
//update_sr2( );
|
||||
LOG( "%f %s mc6854_r: get SR2=$%02X (ap=%i,fv=%i,ridle=%i,rabt=%i,err=%i,dcd=%i,ovrn=%i,rda2=%i)\n",
|
||||
machine().time().as_double(), machine().describe_context(), m_sr2,
|
||||
( m_sr2 & AP ) ? 1 : 0, ( m_sr2 & FV ) ? 1 : 0,
|
||||
@ -802,6 +772,7 @@ uint8_t mc6854_device::read(offs_t offset)
|
||||
uint8_t data = rfifo_pop( );
|
||||
LOG( "%f %s mc6854_r: get data $%02X\n",
|
||||
machine().time().as_double(), machine().describe_context(), data );
|
||||
m_out_rdsr_cb(CLEAR_LINE); // Deactive DMA request line regardless of mode
|
||||
return data;
|
||||
}
|
||||
|
||||
@ -819,15 +790,13 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
{
|
||||
case 0: /* control register 1 */
|
||||
m_cr1 = data;
|
||||
LOG( "%f %s mc6854_w: set CR1=$%02X (ac=%i,irq=%c%c,%sreset=%c%c)\n",
|
||||
LOGSETUP( "%f %s mc6854_w: set CR1=$%02X (ac=%i,irq=%c%c,%sreset=%c%c)\n",
|
||||
machine().time().as_double(), machine().describe_context(), m_cr1,
|
||||
AC ? 1 : 0,
|
||||
RIE ? 'r' : '-', TIE ? 't' : '-',
|
||||
DISCONTINUE ? "discontinue," : "",
|
||||
RRESET ? 'r' : '-', TRESET ? 't' : '-' );
|
||||
if ( m_cr1 & 0xc )
|
||||
logerror( "%s mc6854 DMA not handled (CR1=$%02X)\n",
|
||||
machine().describe_context(), m_cr1 );
|
||||
|
||||
if ( DISCONTINUE )
|
||||
{
|
||||
/* abort receive FIFO but keeps shift register & synchro */
|
||||
@ -841,12 +810,14 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
m_sr1 &= ~FD;
|
||||
m_sr2 &= ~(AP | FV | RIDLE | RABT | ERR | OVRN | DCD);
|
||||
if ( m_dcd ) m_sr2 |= DCD;
|
||||
update_sr1( );
|
||||
}
|
||||
if ( TRESET )
|
||||
{
|
||||
tfifo_clear( );
|
||||
m_sr1 &= ~(TU | TDRA | CTS);
|
||||
if ( m_cts ) m_sr1 |= CTS;
|
||||
update_sr1( );
|
||||
}
|
||||
break;
|
||||
|
||||
@ -855,7 +826,7 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
{
|
||||
/* control register 3 */
|
||||
m_cr3 = data;
|
||||
LOG( "%f %s mc6854_w: set CR3=$%02X (lcf=%i,aex=%i,idl=%i,fdse=%i,loop=%i,tst=%i,dtr=%i)\n",
|
||||
LOGSETUP( "%f %s mc6854_w: set CR3=$%02X (lcf=%i,aex=%i,idl=%i,fdse=%i,loop=%i,tst=%i,dtr=%i)\n",
|
||||
machine().time().as_double(), machine().describe_context(), m_cr3,
|
||||
LCF ? (CEX ? 16 : 8) : 0, AEX ? 1 : 0,
|
||||
IDL0 ? 0 : 1, FDSE ? 1 : 0, LOOP ? 1 : 0,
|
||||
@ -872,7 +843,7 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
{
|
||||
/* control register 2 */
|
||||
m_cr2 = data;
|
||||
LOG( "%f %s mc6854_w: set CR2=$%02X (pse=%i,bytes=%i,fmidle=%i,%s,tlast=%i,clr=%c%c,rts=%i)\n",
|
||||
LOGSETUP( "%f %s mc6854_w: set CR2=$%02X (pse=%i,bytes=%i,fmidle=%i,%s,tlast=%i,clr=%c%c,rts=%i)\n",
|
||||
machine().time().as_double(), machine().describe_context(), m_cr2,
|
||||
PSE ? 1 : 0, TWOBYTES ? 2 : 1, FMIDLE ? 1 : 0,
|
||||
FCTDRA ? "fc" : "tdra", TLAST ? 1 : 0,
|
||||
@ -889,6 +860,7 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
m_sr2 &= ~(AP | FV | RIDLE | RABT | ERR | OVRN | DCD);
|
||||
if ( m_dcd )
|
||||
m_sr2 |= DCD;
|
||||
update_sr1( );
|
||||
}
|
||||
if ( data & 0x40 )
|
||||
{
|
||||
@ -896,6 +868,7 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
m_sr1 &= ~(TU | TDRA | CTS);
|
||||
if ( m_cts )
|
||||
m_sr1 |= CTS;
|
||||
update_sr1( );
|
||||
}
|
||||
|
||||
m_out_rts_cb( RTS ? 1 : 0 );
|
||||
@ -903,7 +876,7 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
break;
|
||||
|
||||
case 2: /* transmitter data: continue data */
|
||||
LOG( "%f %smc6854_w: push data=$%02X\n", machine().time().as_double(), machine().describe_context(), data );
|
||||
LOGSETUP( "%f %smc6854_w: push data=$%02X\n", machine().time().as_double(), machine().describe_context(), data );
|
||||
tfifo_push( data );
|
||||
break;
|
||||
|
||||
@ -912,7 +885,7 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
{
|
||||
/* control register 4 */
|
||||
m_cr4 = data;
|
||||
LOG( "%f %s mc6854_w: set CR4=$%02X (interframe=%i,tlen=%i,rlen=%i,%s%s)\n", machine().time().as_double(), machine().describe_context(), m_cr4,
|
||||
LOGSETUP( "%f %s mc6854_w: set CR4=$%02X (interframe=%i,tlen=%i,rlen=%i,%s%s)\n", machine().time().as_double(), machine().describe_context(), m_cr4,
|
||||
TWOINTER ? 2 : 1,
|
||||
TWL, RWL,
|
||||
ABT ? ( ABTEX ? "abort-ext," : "abort,") : "",
|
||||
@ -927,7 +900,7 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
else
|
||||
{
|
||||
/* transmitter data: last data */
|
||||
LOG( "%f %s mc6854_w: push last-data=$%02X\n", machine().time().as_double(), machine().describe_context(), data );
|
||||
LOGSETUP( "%f %s mc6854_w: push last-data=$%02X\n", machine().time().as_double(), machine().describe_context(), data );
|
||||
tfifo_push( data );
|
||||
tfifo_terminate( );
|
||||
}
|
||||
@ -938,9 +911,82 @@ void mc6854_device::write(offs_t offset, uint8_t data)
|
||||
}
|
||||
}
|
||||
|
||||
inline bool mc6854_device::receive_allowed() const
|
||||
{
|
||||
return (!RRESET && !(m_sr2 & DCD));
|
||||
}
|
||||
|
||||
/* MC6854 makes fields from bits */
|
||||
WRITE_LINE_MEMBER( mc6854_device::rxc_w )
|
||||
{
|
||||
// TODO
|
||||
if (receive_allowed() && state && !m_rxc)
|
||||
{
|
||||
int fieldlen = ( m_rstate < 6 ) ? 8 : RWL;
|
||||
|
||||
if ( m_rxd )
|
||||
{
|
||||
LOGBITS("I ");
|
||||
m_rones++;
|
||||
m_rreg = (m_rreg >> 1) | 0x80000000;
|
||||
if ( m_rones >= 8 )
|
||||
{
|
||||
/* abort */
|
||||
m_rstate = 0;
|
||||
m_rsize = 0;
|
||||
if ( m_rstate > 1 )
|
||||
{
|
||||
/* only in-frame abort */
|
||||
m_sr2 |= RABT;
|
||||
LOG( "%f mc6854_receive_bit: abort\n", machine().time().as_double() );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
m_rsize++;
|
||||
if ( m_rstate && m_rsize >= fieldlen + 24 )
|
||||
rfifo_push( m_rreg );
|
||||
}
|
||||
}
|
||||
else if ( m_rones == 5 )
|
||||
{
|
||||
/* discards '0' inserted after 5 '1' */
|
||||
LOGBITS("A zero is discarded\n");
|
||||
m_rones = 0;
|
||||
return;
|
||||
}
|
||||
else if ( m_rones == 6 )
|
||||
{
|
||||
/* flag */
|
||||
if ( FDSE )
|
||||
{
|
||||
m_sr1 |= FD;
|
||||
update_sr1( );
|
||||
}
|
||||
|
||||
if ( m_rstate > 1 )
|
||||
{
|
||||
/* end of frame */
|
||||
m_rreg >>= 1;
|
||||
m_rsize++;
|
||||
if ( m_rsize >= fieldlen + 24 ) /* last field */
|
||||
rfifo_push( m_rreg );
|
||||
rfifo_terminate( );
|
||||
LOG( "%f mc6854_receive_bit: end of frame\n", machine().time().as_double() );
|
||||
}
|
||||
m_rones = 0;
|
||||
m_rstate = 1;
|
||||
m_rsize = 0;
|
||||
} else
|
||||
{
|
||||
LOGBITS("O ");
|
||||
m_rones = 0;
|
||||
m_rreg >>= 1;
|
||||
m_rsize++;
|
||||
if ( m_rstate && m_rsize >= fieldlen + 24 )
|
||||
rfifo_push( m_rreg );
|
||||
}
|
||||
}
|
||||
m_rxc = state;
|
||||
}
|
||||
|
||||
WRITE_LINE_MEMBER( mc6854_device::txc_w )
|
||||
|
||||
@ -23,16 +23,19 @@ public:
|
||||
|
||||
mc6854_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
|
||||
|
||||
auto out_irq_cb() { return m_out_irq_cb.bind(); }
|
||||
auto out_txd_cb() { return m_out_txd_cb.bind(); }
|
||||
auto out_rts_cb() { return m_out_rts_cb.bind(); }
|
||||
auto out_dtr_cb() { return m_out_dtr_cb.bind(); }
|
||||
auto out_irq_cb() { return m_out_irq_cb.bind(); }
|
||||
auto out_rdsr_cb() { return m_out_rdsr_cb.bind(); }
|
||||
auto out_tdsr_cb() { return m_out_tdsr_cb.bind(); }
|
||||
auto out_txd_cb() { return m_out_txd_cb.bind(); }
|
||||
auto out_rts_cb() { return m_out_rts_cb.bind(); }
|
||||
auto out_dtr_cb() { return m_out_dtr_cb.bind(); }
|
||||
|
||||
template <typename... T> void set_out_frame_callback(T &&... args) { m_out_frame_cb.set(std::forward<T>(args)...); }
|
||||
|
||||
/* interface to CPU via address/data bus*/
|
||||
uint8_t read(offs_t offset);
|
||||
void write(offs_t offset, uint8_t data);
|
||||
uint8_t dma_r(){ return read(2); }
|
||||
|
||||
/* low-level, bit-based interface */
|
||||
DECLARE_WRITE_LINE_MEMBER( set_rx );
|
||||
@ -52,12 +55,15 @@ protected:
|
||||
// device-level overrides
|
||||
virtual void device_start() override;
|
||||
virtual void device_reset() override;
|
||||
bool receive_allowed() const;
|
||||
|
||||
private:
|
||||
static constexpr unsigned FIFO_SIZE = 3; // hardcoded size of the 6854 FIFO (this is a hardware limit)
|
||||
|
||||
// internal state
|
||||
devcb_write_line m_out_irq_cb; /* interrupt request */
|
||||
devcb_write_line m_out_rdsr_cb; /* Rx fifo DMA request */
|
||||
devcb_write_line m_out_tdsr_cb; /* Tx fifo DMA request */
|
||||
|
||||
/* low-level, bit-based interface */
|
||||
devcb_write_line m_out_txd_cb; /* transmit bit */
|
||||
@ -87,6 +93,8 @@ private:
|
||||
uint8_t m_rones; /* count '1 bits */
|
||||
uint8_t m_rsize; /* bits in the shift register */
|
||||
uint16_t m_rfifo[FIFO_SIZE]; /* X x 8-bit FIFO + full & addr marker bits */
|
||||
bool m_rxd;
|
||||
bool m_rxc;
|
||||
|
||||
/* frame-based interface*/
|
||||
uint8_t m_frame[MAX_FRAME_LENGTH];
|
||||
@ -132,6 +140,7 @@ DECLARE_DEVICE_TYPE(MC6854, mc6854_device)
|
||||
The frame-based interface is higher-level and faster.
|
||||
It passes bytes directly from one end to the other without bothering with
|
||||
the actual bit-encoding, synchronization, and CRC.
|
||||
|
||||
Once completed, a frame is sent through out_frame. Aborted frames are not
|
||||
transmitted at all. No start flag, stop flag, or crc bits are transmitted.
|
||||
send_frame makes a frame available to the CPU through the 6854 (it may
|
||||
|
||||
@ -12,9 +12,11 @@
|
||||
#include "plaparse.h"
|
||||
|
||||
#define LOG_TERMS (1 << 0U)
|
||||
//#define VERBOSE (LOG_TERMS)
|
||||
#include "logmacro.h"
|
||||
|
||||
//#define VERBOSE (LOG_TERMS)
|
||||
//#define LOG_OUTPUT_STREAM std::cout
|
||||
|
||||
#include "logmacro.h"
|
||||
|
||||
DEFINE_DEVICE_TYPE(PLA, pla_device, "pla", "PLA")
|
||||
DEFINE_DEVICE_TYPE(PLS100, pls100_device, "pls100", "82S100-series PLA")
|
||||
@ -123,6 +125,8 @@ void pla_device::parse_fusemap()
|
||||
return;
|
||||
}
|
||||
|
||||
LOGMASKED(LOG_TERMS, "PLA read and parsed, %d fuses in %s format\n", jed.numfuses, jed.binfmt == MAXLOADER ? "Maxloader" : "DataIO" );
|
||||
|
||||
// parse it
|
||||
uint32_t fusenum = 0;
|
||||
|
||||
@ -135,11 +139,21 @@ void pla_device::parse_fusemap()
|
||||
|
||||
for (int i = 0; i < m_inputs; i++)
|
||||
{
|
||||
// complement
|
||||
term->and_mask |= (uint64_t)jed_get_fuse(&jed, fusenum++) << (i + 32);
|
||||
|
||||
// true
|
||||
term->and_mask |= (uint64_t)jed_get_fuse(&jed, fusenum++) << i;
|
||||
if (jed.binfmt == MAXLOADER)
|
||||
{
|
||||
term->and_mask |= (uint64_t)jed_get_fuse(&jed, fusenum++) << (i + 32); // complement
|
||||
term->and_mask |= (uint64_t)jed_get_fuse(&jed, fusenum++) << i; // true
|
||||
}
|
||||
else if (jed.binfmt == DATAIO)
|
||||
{
|
||||
term->and_mask |= (uint64_t)jed_get_fuse(&jed, fusenum++) << i; // true
|
||||
term->and_mask |= (uint64_t)jed_get_fuse(&jed, fusenum++) << (i + 32); // complement
|
||||
}
|
||||
else
|
||||
{
|
||||
logerror("PLA parser: Unknown JED format\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// OR mask
|
||||
|
||||
@ -391,9 +391,24 @@ int jedbin_parse(const void *data, size_t length, jed_data *result)
|
||||
/* first unpack the number of fuses */
|
||||
result->numfuses = (cursrc[0] << 24) | (cursrc[1] << 16) | (cursrc[2] << 8) | cursrc[3];
|
||||
cursrc += 4;
|
||||
|
||||
if (result->numfuses == 0 || result->numfuses > JED_MAX_FUSES)
|
||||
return JEDERR_INVALID_DATA;
|
||||
|
||||
/* Detect DataIO binary format and prepare for conversion. This transformation is based on observation of an 82S100 dump */
|
||||
if (result->numfuses == ((cursrc[0] << 24) | (cursrc[1] << 16) | (cursrc[2] << 8) | cursrc[3]))
|
||||
{
|
||||
result->numfuses = (result->numfuses - 9) * 8; // Double 32 bit byte file size header + trailing byte to Single 32 byte fuse count
|
||||
cursrc = cursrc + 4; // Adjust start of buffer, trailing byte will not be copied below
|
||||
result->binfmt = DATAIO; // DataIO also has swapped inverted/non-inverted line fuses so remember origin
|
||||
if (LOG_PARSE) printf("DATAIO format detected\n");
|
||||
}
|
||||
else
|
||||
{
|
||||
result->binfmt = MAXLOADER; // This is the old format just set for completeness.
|
||||
if (LOG_PARSE) printf("MAXLOADER format detected\n");
|
||||
}
|
||||
|
||||
/* now make sure we have enough data in the source */
|
||||
if (length < 4 + (result->numfuses + 7) / 8)
|
||||
return JEDERR_INVALID_DATA;
|
||||
|
||||
@ -29,7 +29,9 @@
|
||||
#define JEDERR_BAD_XMIT_SUM 2
|
||||
#define JEDERR_BAD_FUSE_SUM 3
|
||||
|
||||
|
||||
/* binary file formats */
|
||||
#define MAXLOADER 0
|
||||
#define DATAIO 1
|
||||
|
||||
/***************************************************************************
|
||||
TYPE DEFINITIONS
|
||||
@ -37,8 +39,9 @@
|
||||
|
||||
struct jed_data
|
||||
{
|
||||
uint32_t numfuses; /* number of defined fuses */
|
||||
uint8_t fusemap[JED_MAX_FUSES / 8];/* array of bit-packed data */
|
||||
uint32_t numfuses; /* number of defined fuses */
|
||||
uint8_t fusemap[JED_MAX_FUSES / 8]; /* array of bit-packed data */
|
||||
uint8_t binfmt; /* file format MAXLOADER or DATAIO */
|
||||
};
|
||||
|
||||
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
Alfaskop 41 series
|
||||
|
||||
This driver is a part of a revivel project for Alfaskop 41 series where
|
||||
no known working system exists today because of the distributed nature.
|
||||
no known working system exists today because of its distributed nature.
|
||||
All parts network boots over SS3 (SDLC) from a Floppy Disk unit and nothing
|
||||
works unless there is a floppy in that unit. These floppies are rare and
|
||||
many parts have been discarded because they are useless stand alone.
|
||||
@ -25,18 +25,31 @@ Dansk Datahistorisk Forening - http://datamuseum.dk/
|
||||
#include "cpu/m6800/m6800.h"
|
||||
#include "machine/6850acia.h"
|
||||
#include "machine/6821pia.h"
|
||||
#include "machine/mc6854.h"
|
||||
#include "machine/mc6844.h"
|
||||
#include "machine/pla.h"
|
||||
#include "video/mc6845.h"
|
||||
#include "screen.h"
|
||||
#include "machine/input_merger.h"
|
||||
#include "machine/output_latch.h"
|
||||
#include "machine/alfaskop_s41_kb.h"
|
||||
|
||||
//#include "bus/rs232/rs232.h"
|
||||
//#include "machine/clock.h"
|
||||
#include "machine/clock.h"
|
||||
|
||||
#define LOG_IO (1U << 1)
|
||||
#define LOG_NVRAM (1U << 2)
|
||||
#define LOG_MIC (1U << 3)
|
||||
#define LOG_DIA (1U << 4)
|
||||
#define LOG_DMA (1U << 5)
|
||||
#define LOG_IRQ (1U << 6)
|
||||
#define LOG_ADLC (1U << 7)
|
||||
#define LOG_KBD (1U << 8)
|
||||
#define LOG_AM (1U << 9)
|
||||
#define LOG_LEDS (1U << 10)
|
||||
#define LOG_BITS (1U << 11)
|
||||
|
||||
//#define VERBOSE (LOG_IO|LOG_NVRAM|LOG_MIC|LOG_DIA)
|
||||
//#define VERBOSE (LOG_MIC)
|
||||
//#define LOG_OUTPUT_STREAM std::cout
|
||||
|
||||
#include "logmacro.h"
|
||||
@ -45,6 +58,15 @@ Dansk Datahistorisk Forening - http://datamuseum.dk/
|
||||
#define LOGNVRAM(...) LOGMASKED(LOG_NVRAM, __VA_ARGS__)
|
||||
#define LOGMIC(...) LOGMASKED(LOG_MIC, __VA_ARGS__)
|
||||
#define LOGDIA(...) LOGMASKED(LOG_DIA, __VA_ARGS__)
|
||||
#define LOGDMA(...) LOGMASKED(LOG_DMA, __VA_ARGS__)
|
||||
#define LOGIRQ(...) LOGMASKED(LOG_IRQ, __VA_ARGS__)
|
||||
#define LOGADLC(...) LOGMASKED(LOG_ADLC, __VA_ARGS__)
|
||||
#define LOGKBD(...) LOGMASKED(LOG_KBD, __VA_ARGS__)
|
||||
#define LOGAM(...) LOGMASKED(LOG_AM, __VA_ARGS__)
|
||||
#define LOGLEDS(...) LOGMASKED(LOG_LEDS, __VA_ARGS__)
|
||||
#define LOGBITS(...) LOGMASKED(LOG_BITS, __VA_ARGS__)
|
||||
|
||||
#define PLA1_TAG "ic50"
|
||||
|
||||
class alfaskop4110_state : public driver_device
|
||||
{
|
||||
@ -52,30 +74,96 @@ public:
|
||||
alfaskop4110_state(const machine_config &mconfig, device_type type, const char *tag)
|
||||
: driver_device(mconfig, type, tag)
|
||||
, m_maincpu(*this, "maincpu")
|
||||
, m_kbdacia(*this, "kbdacia")
|
||||
, m_micpia(*this, "micpia")
|
||||
, m_diapia(*this, "diapia")
|
||||
, m_kbd_acia(*this, "kbd_acia")
|
||||
, m_mic_pia(*this, "mic_pia")
|
||||
, m_dia_pia(*this, "dia_pia")
|
||||
, m_crtc(*this, "crtc")
|
||||
, m_screen(*this, "screen")
|
||||
, m_vram(*this, "vram")
|
||||
, m_pla(*this, PLA1_TAG)
|
||||
, m_kbd(*this, "keyboard")
|
||||
, m_chargen(*this, "chargen")
|
||||
, m_tia_adlc(*this, "tia_adlc")
|
||||
, m_tia_dma(*this, "tia_dma")
|
||||
, m_irq(0)
|
||||
, m_imsk(0)
|
||||
{ }
|
||||
|
||||
void alfaskop4110(machine_config &config);
|
||||
private:
|
||||
virtual void machine_start() override;
|
||||
virtual void machine_reset() override;
|
||||
|
||||
void mem_map(address_map &map);
|
||||
|
||||
required_device<cpu_device> m_maincpu;
|
||||
required_device<acia6850_device> m_kbdacia;
|
||||
required_device<pia6821_device> m_micpia;
|
||||
required_device<pia6821_device> m_diapia;
|
||||
required_device<acia6850_device> m_kbd_acia;
|
||||
required_device<pia6821_device> m_mic_pia;
|
||||
required_device<pia6821_device> m_dia_pia;
|
||||
required_device<mc6845_device> m_crtc;
|
||||
required_device<screen_device> m_screen;
|
||||
required_shared_ptr<uint8_t> m_vram;
|
||||
required_device<pls100_device> m_pla;
|
||||
required_device<alfaskop_s41_keyboard_device> m_kbd;
|
||||
|
||||
/* Video controller */
|
||||
required_region_ptr<uint8_t> m_chargen;
|
||||
MC6845_UPDATE_ROW(crtc_update_row);
|
||||
|
||||
/* TIA */
|
||||
required_device<mc6854_device> m_tia_adlc;
|
||||
required_device<mc6844_device> m_tia_dma;
|
||||
|
||||
/* Interrupt handling */
|
||||
template <unsigned N> DECLARE_WRITE_LINE_MEMBER(irq_w);
|
||||
uint8_t m_irq;
|
||||
uint8_t m_imsk;
|
||||
|
||||
/* Kbd communications */
|
||||
uint8_t m_txd;
|
||||
|
||||
/* Debug stuff */
|
||||
/* Timer */
|
||||
enum
|
||||
{
|
||||
TIMER_POLL_START,
|
||||
TIMER_POLL_BIT
|
||||
};
|
||||
void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
|
||||
|
||||
// DEBUG stuff, will be removed when hooked up towards remote peer
|
||||
#if 1
|
||||
/* zero extended SDLC poll message frame to feed into receiver as a test
|
||||
0 1 1 1 1 1 1 0 ; opening flag 0x7e
|
||||
0 0 0 0 0 0 0 0 ; 0x00
|
||||
1 1 1 1 1 0 1 1 1 ; 0xff <- a zero needs to be inserted, done by test code
|
||||
0 0 0 0 0 0 1 1 ; 0xc0
|
||||
0 0 0 0 0 1 0 1 ; 0xa0
|
||||
1 0 1 1 0 0 0 1 ; CRC 0x8d
|
||||
1 0 1 0 1 0 1 0 ; CRC 0x55
|
||||
0 1 1 1 1 1 1 0 ; closing flag 0x7e
|
||||
*/
|
||||
uint8_t txBuf[10] = {0x7e, 0x00, 0xff, 0xc0, 0xa0, 0x8d, 0x55, 0x7e};
|
||||
|
||||
#else // Alternative poll message body wih faulty CRC, CRC isn't checked yet by the ADLC
|
||||
|
||||
/* zero extended SDLC poll message frame to feed into receiver as a test
|
||||
0 1 1 1 1 1 1 0 ; opening flag 0x7e
|
||||
0 0 0 0 0 0 0 0 ; 0x00
|
||||
0 0 0 0 0 0 0 0 ; 0x00
|
||||
1 1 1 1 1 0 1 1 0 ; 0xfe <- a zero needs to be inserted, done by test code
|
||||
1 1 1 0 1 0 0 1 ; 0xe9
|
||||
1 0 1 1 0 0 0 1 ; CRC 0x8d - wrong
|
||||
1 0 1 0 1 0 1 0 ; CRC 0x55 - wrong
|
||||
0 1 1 1 1 1 1 0 ; closing flag 0x7e
|
||||
*/
|
||||
uint8_t txBuf[10] = {0x7e, 0x00, 0x00, 0xfe, 0xe9, 0x8d, 0x55, 0x7e};
|
||||
#endif
|
||||
|
||||
int index = 0;
|
||||
int pos = 0;
|
||||
int ones = 0;
|
||||
bool flank = false;
|
||||
};
|
||||
|
||||
class alfaskop4120_state : public driver_device
|
||||
@ -84,8 +172,8 @@ public:
|
||||
alfaskop4120_state(const machine_config &mconfig, device_type type, const char *tag)
|
||||
: driver_device(mconfig, type, tag)
|
||||
, m_maincpu(*this, "maincpu")
|
||||
, m_micpia(*this, "micpia")
|
||||
, m_fdapia(*this, "diapia")
|
||||
, m_mic_pia(*this, "mic_pia")
|
||||
, m_fdapia(*this, "dia_pia")
|
||||
{ }
|
||||
|
||||
void alfaskop4120(machine_config &config);
|
||||
@ -93,7 +181,7 @@ private:
|
||||
void mem_map(address_map &map);
|
||||
|
||||
required_device<cpu_device> m_maincpu;
|
||||
required_device<pia6821_device> m_micpia;
|
||||
required_device<pia6821_device> m_mic_pia;
|
||||
required_device<pia6821_device> m_fdapia;
|
||||
};
|
||||
|
||||
@ -103,7 +191,7 @@ public:
|
||||
alfaskop4101_state(const machine_config &mconfig, device_type type, const char *tag)
|
||||
: driver_device(mconfig, type, tag)
|
||||
, m_maincpu(*this, "maincpu")
|
||||
, m_micpia(*this, "micpia")
|
||||
, m_mic_pia(*this, "mic_pia")
|
||||
{ }
|
||||
|
||||
void alfaskop4101(machine_config &config);
|
||||
@ -111,31 +199,77 @@ private:
|
||||
void mem_map(address_map &map);
|
||||
|
||||
required_device<cpu_device> m_maincpu;
|
||||
required_device<pia6821_device> m_micpia;
|
||||
required_device<pia6821_device> m_mic_pia;
|
||||
};
|
||||
|
||||
void alfaskop4110_state::mem_map(address_map &map)
|
||||
{
|
||||
map.unmap_value_high();
|
||||
map(0x0000, 0x7fff).ram();
|
||||
map(0x7800, 0x7fff).ram().share(m_vram);
|
||||
map(0x7800, 0x7fff).ram().share(m_vram); // TODO: Video RAM base address is configurable via NVRAM - this is the default
|
||||
map(0x8000, 0xefff).ram();
|
||||
|
||||
map(0xf600, 0xf6ff).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGNVRAM("nvram_r %04x: %02x\n", offset, 0); return (uint8_t) 0; }),// TODO: Move to MRO board
|
||||
NAME( [this](offs_t offset, uint8_t data) { LOGNVRAM("nvram_w %04x: %02x\n", offset, data); }));
|
||||
// NVRAM
|
||||
map(0xf600, 0xf6ff).lrw8(NAME([this](offs_t offset) -> uint8_t
|
||||
{
|
||||
LOGNVRAM("nvram_r %04x: %02x\n", offset, 0); return (uint8_t) 0;
|
||||
}),
|
||||
NAME([this](offs_t offset, uint8_t data)
|
||||
{
|
||||
LOGNVRAM("nvram_w %04x: %02x\n", offset, data);
|
||||
}));
|
||||
// TIA board
|
||||
map(0xf700, 0xf71f).mirror(0x00).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGDMA("TIA DMA_r %04x: %02x\n", offset, 0); return m_tia_dma->read(offset); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGDMA("TIA DMA_w %04x: %02x\n", offset, data); m_tia_dma->write(offset, data); }));
|
||||
map(0xf720, 0xf723).mirror(0x04).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGADLC("TIA ADLC_r %04x: %02x\n", offset, 0); return m_tia_adlc->read(offset); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGADLC("TIA ADLC_w %04x: %02x\n", offset, data); m_tia_adlc->write(offset, data); }));
|
||||
|
||||
// Main PCB
|
||||
map(0xf7d9, 0xf7d9).mirror(0x06).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGIO("CRTC reg r %04x: %02x\n", offset, 0); return m_crtc->register_r(); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGIO("CRTC reg w %04x: %02x\n", offset, data); m_crtc->register_w(data);}));
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGIO("CRTC reg w %04x: %02x\n", offset, data); m_crtc->register_w(data);}));
|
||||
map(0xf7d8, 0xf7d8).mirror(0x06).lw8(NAME([this](offs_t offset, uint8_t data) { LOGIO("CRTC adr w %04x: %02x\n", offset, data); m_crtc->address_w(data); }));
|
||||
map(0xf7d0, 0xf7d3).mirror(0x04).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGIO("DIA pia_r %04x: %02x\n", offset, 0); return m_diapia->read(offset & 3); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGIO("DIA pia_w %04x: %02x\n", offset, data); m_diapia->write(offset & 3, data); }));
|
||||
map(0xf7c4, 0xf7c7).mirror(0x00).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGIO("MIC pia_r %04x: %02x\n", offset, 0); return m_micpia->read(offset & 3); }),
|
||||
NAME( [this](offs_t offset, uint8_t data) { LOGIO("MIC pia_w %04x: %02x\n", offset, data); m_micpia->write(offset & 3, data); }));
|
||||
map(0xf7c0, 0xf7c1).mirror(0x02).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGIO("KBD acia_r %04x: %02x\n", offset, 0); return m_kbdacia->read(offset & 1); }),
|
||||
NAME( [this](offs_t offset, uint8_t data) { LOGIO("KBD acia_w %04x: %02x\n", offset, data); m_kbdacia->write(offset & 1, data); }));
|
||||
map(0xf7d0, 0xf7d3).mirror(0x04).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGDIA("DIA pia_r %04x: %02x\n", offset, 0); return m_dia_pia->read(offset & 3); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGDIA("DIA pia_w %04x: %02x\n", offset, data); m_dia_pia->write(offset & 3, data); }));
|
||||
map(0xf7c4, 0xf7c7).mirror(0x00).lrw8(NAME([this](offs_t offset) -> uint8_t { uint8_t tmp = m_mic_pia->read(offset & 3); LOGMIC("\nMIC pia_r %04x: %02x\n", offset, tmp); return tmp; }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGMIC("\nMIC pia_w %04x: %02x\n", offset, data); m_mic_pia->write(offset & 3, data); }));
|
||||
map(0xf7c0, 0xf7c1).mirror(0x02).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGKBD("KBD acia_r %04x: %02x\n", offset, 0); return m_kbd_acia->read(offset & 1); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGKBD("KBD acia_w %04x: %02x\n", offset, data); m_kbd_acia->write(offset & 1, data); }));
|
||||
|
||||
map(0xf7fc, 0xf7fc).mirror(0x00).lr8(NAME([this](offs_t offset) -> uint8_t { LOGIO("Address Switch 0-7\n"); return 0; }));
|
||||
map(0xf7fc, 0xf7fc).mirror(0x00).lr8(NAME([this](offs_t offset) -> uint8_t { LOGIO("Address Switch 0-7\n"); return 0; }));
|
||||
|
||||
map(0xf800, 0xffff).rom().region("roms", 0);
|
||||
map(0xf800, 0xffe7).rom().region("roms", 0);
|
||||
|
||||
// IRQ mask setting
|
||||
map(0xffe8, 0xfff7).rom().lrw8( NAME([this](offs_t offset) -> uint8_t
|
||||
{
|
||||
if (!machine().side_effects_disabled()) LOGAM("AMSK read set %04x\n", offset >> 1);
|
||||
m_imsk = (offset >> 1) & 7;
|
||||
return ((uint8_t *) memregion("roms")->base() + 0x7e8)[offset];
|
||||
}),
|
||||
NAME([this](offs_t offset, uint8_t data)
|
||||
{
|
||||
if (!machine().side_effects_disabled()) LOGAM("AMSK write set %04x\n", offset);
|
||||
m_imsk = (offset >> 1) & 7;
|
||||
}));
|
||||
|
||||
// Address modification
|
||||
map(0xfff8, 0xfff9).rom().lrw8( NAME([this](offs_t offset) -> uint8_t
|
||||
{
|
||||
uint16_t ploffs = (~m_irq & 0xff) | ((m_imsk & 0x07) << 8) | 0x000 | (0x18 << 11);
|
||||
uint8_t tmp = ((uint8_t *) memregion("roms")->base())[0x7e0 | offset | ((m_pla->read(ploffs) & 0xf0) >> 3)];
|
||||
if (!machine().side_effects_disabled())
|
||||
{
|
||||
LOGAM("AMOD read %04x: %02x\n", offset, tmp);
|
||||
LOGAM("AMOD pla read %04x: %02x ==> %04x\n", ploffs, m_pla->read(ploffs), (0xffe0 | offset | ((m_pla->read(ploffs) & 0xf0) >> 3)));
|
||||
}
|
||||
return tmp;
|
||||
}),
|
||||
NAME([this](offs_t offset, uint8_t data) // TODO: Check what a write does if anything
|
||||
{
|
||||
if (!machine().side_effects_disabled()) LOGAM("AMOD write %04x\n", offset);
|
||||
}));
|
||||
|
||||
map(0xfffa, 0xffff).rom().region("roms", 0x7fa);
|
||||
}
|
||||
|
||||
void alfaskop4120_state::mem_map(address_map &map)
|
||||
@ -145,9 +279,9 @@ void alfaskop4120_state::mem_map(address_map &map)
|
||||
map(0xf600, 0xf6ff).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGNVRAM("nvram_r %04x: %02x\n", offset, 0); return (uint8_t) 0; }), // TODO: Move to MRO board
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGNVRAM("nvram_w %04x: %02x\n", offset, data); }));
|
||||
map(0xf740, 0xf743).mirror(0x0c).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGIO("FDA pia_r %04x: %02x\n", offset, 0); return m_fdapia->read(offset & 3); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGIO("FDA pia_w %04x: %02x\n", offset, data); m_fdapia->write(offset & 3, data); }));
|
||||
map(0xf7c4, 0xf7c7).mirror(0x00).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGIO("MIC pia_r %04x: %02x\n", offset, 0); return m_micpia->read(offset & 3); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGIO("MIC pia_w %04x: %02x\n", offset, data); m_micpia->write(offset & 3, data); }));
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGIO("FDA pia_w %04x: %02x\n", offset, data); m_fdapia->write(offset & 3, data); }));
|
||||
map(0xf7c4, 0xf7c7).mirror(0x00).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGMIC("MIC pia_r %04x: %02x\n", offset, 0); return m_mic_pia->read(offset & 3); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGMIC("MIC pia_w %04x: %02x\n", offset, data); m_mic_pia->write(offset & 3, data); }));
|
||||
map(0xf800, 0xffff).rom().region("roms", 0);
|
||||
}
|
||||
|
||||
@ -157,8 +291,8 @@ void alfaskop4101_state::mem_map(address_map &map)
|
||||
map(0x0000, 0xefff).ram();
|
||||
map(0xf600, 0xf6ff).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGNVRAM("nvram_r %04x: %02x\n", offset, 0); return (uint8_t) 0; }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGNVRAM("nvram_w %04x: %02x\n", offset, data); }));
|
||||
map(0xf7c4, 0xf7c7).mirror(0x00).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGIO("MIC pia_r %04x: %02x\n", offset, 0); return m_micpia->read(offset & 3); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGIO("MIC pia_w %04x: %02x\n", offset, data); m_micpia->write(offset & 3, data); }));
|
||||
map(0xf7c4, 0xf7c7).mirror(0x00).lrw8(NAME([this](offs_t offset) -> uint8_t { LOGMIC("MIC pia_r %04x: %02x\n", offset, 0); return m_mic_pia->read(offset & 3); }),
|
||||
NAME([this](offs_t offset, uint8_t data) { LOGMIC("MIC pia_w %04x: %02x\n", offset, data); m_mic_pia->write(offset & 3, data); }));
|
||||
map(0xf800, 0xffff).rom().region("roms", 0);
|
||||
}
|
||||
|
||||
@ -172,6 +306,14 @@ INPUT_PORTS_END
|
||||
static INPUT_PORTS_START( alfaskop4101 )
|
||||
INPUT_PORTS_END
|
||||
|
||||
/* Interrupt handling - vector address modifyer, irq prioritizer and irq mask */
|
||||
template <unsigned N> WRITE_LINE_MEMBER( alfaskop4110_state::irq_w )
|
||||
{
|
||||
m_irq = (m_irq & ~(1 << N)) | ((state ? 1 : 0) << N);
|
||||
LOGIRQ("4110 IRQ %d: %d ==> %02x\n", N, state, m_irq);
|
||||
m_maincpu->set_input_line(M6800_IRQ_LINE, state);
|
||||
}
|
||||
|
||||
/* Simplified chargen, no attributes or special formats/features yet */
|
||||
MC6845_UPDATE_ROW( alfaskop4110_state::crtc_update_row )
|
||||
{
|
||||
@ -197,38 +339,256 @@ void alfaskop4110_state::alfaskop4110(machine_config &config)
|
||||
M6800(config, m_maincpu, XTAL(19'170'000) / 18); // Verified from service manual
|
||||
m_maincpu->set_addrmap(AS_PROGRAM, &alfaskop4110_state::mem_map);
|
||||
|
||||
// TTL-level serial keyboard callback
|
||||
ALFASKOP_S41_KB(config, m_kbd);
|
||||
m_kbd->txd_cb().set([this](bool state)
|
||||
{
|
||||
LOGBITS("KBD->4110: %d\n", state);
|
||||
m_kbd_acia->write_rxd(state);
|
||||
});
|
||||
m_kbd->leds_cb().set([this] (uint8_t data)
|
||||
{
|
||||
LOGLEDS("LEDS: write %02x to LEDs\n", data);
|
||||
});
|
||||
|
||||
|
||||
/* Interrupt controller and address modifier PLA */
|
||||
/*
|
||||
* 82S100 data sheet
|
||||
* -----------------
|
||||
*
|
||||
* The 82S100 is a bipolar, fuse-link programmable logic array. It uses the
|
||||
* standard AND/OR/invert architecture to directly implement custom
|
||||
* um-of-product logic equations.
|
||||
*
|
||||
* Each device consists of 16 dedicated inputs and 8 dedicated outputs. Each
|
||||
* output is capable of being actively controlled by any or all of the 48
|
||||
* product terms. The true, complement, or don't care condition of each of the
|
||||
* 16 inputs ANDed together comprise one P-Term. All 48 P-Terms are then OR-d
|
||||
* to each output. The user must then only select which P-Terms will activate
|
||||
* an output by disconnecting terms which do not affect the output. In addition,
|
||||
* each output can be fused as active high or active low.
|
||||
*
|
||||
* The 82S100 is fully TTL compatible and includes chip-enable control for
|
||||
* expansion of input variables and output inhibit. It features three state
|
||||
* outputs.
|
||||
*
|
||||
* Field programmable Ni-Cr links
|
||||
* 16 inputs
|
||||
* 8 outputs
|
||||
* 48 product terms
|
||||
* Commercial verion - N82S100 - 50ns max address access time
|
||||
* Power dissipation - 600mW typ
|
||||
* Input loading - 100uA max
|
||||
* Chip enable input
|
||||
* Three state outputs
|
||||
*
|
||||
*
|
||||
*/
|
||||
/* _____ _____
|
||||
* nc FE 1 |* \_/ | 28 Vcc
|
||||
* IRQ7 I7 2 | | 27 I8 mask 1
|
||||
* IRQ6 I6 3 | | 26 I9 mask 2
|
||||
* IRQ5 I5 4 | | 25 I10 mask 3
|
||||
* IRQ4 I4 5 | | 24 I11 Address &== 1111 1111 111x xxxx
|
||||
* IRQ3 I3 6 | 82S100 | 23 I12 AI 1 A1
|
||||
* IRQ2 I2 7 | | 22 I13 AI 2 A2
|
||||
* IRQ1 I1 8 | IC50 | 21 I14 AI 3 A3
|
||||
* IRQ0 I0 9 | | 20 I15 AI 4 A4
|
||||
* P4 F7 10 | Interrupt | 19 _CE
|
||||
* mask P3 F6 11 | Controller | 18 F0 IRQ
|
||||
* mask P2 F5 12 | PLA | 17 F1 mask register
|
||||
* mask P1 F4 13 | | 16 F2 interrupt latch
|
||||
* GND 14 |_____________| 15 F3 nc
|
||||
*/
|
||||
PLS100(config, m_pla);
|
||||
|
||||
MC6845(config, m_crtc, XTAL(19'170'000) / 9);
|
||||
m_crtc->set_screen("screen");
|
||||
m_crtc->set_show_border_area(false);
|
||||
m_crtc->set_char_width(8);
|
||||
m_crtc->set_update_row_callback(FUNC(alfaskop4110_state::crtc_update_row));
|
||||
// VSYNC should goto IRQ1 through some logic involving MIC PIA CRA bits 0 ( 1 == enable) & 1 (1 == positive edge)
|
||||
//m_crtc->out_vsync_callback().set(FUNC(alfaskop4110_state::crtc_vsync);
|
||||
//m_crtc->out_vsync_callback().set([this](bool state) { LOGIRQ("CRTC VSYNC: %d\n", state); });
|
||||
//m_crtc->out_vsync_callback().set("irq1", FUNC(input_merger_device::in_w<1>));
|
||||
|
||||
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
|
||||
m_screen->set_raw(19'170'000, 80 * 8, 0, 80 * 8, 400, 0, 400);
|
||||
m_screen->set_screen_update("crtc", FUNC(mc6845_device::screen_update));
|
||||
|
||||
PIA6821(config, m_micpia, 0); // Main board PIA
|
||||
m_micpia->readcb1_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("MIC PIA: CB1_r\n"); return 0;});
|
||||
m_micpia->cb2_handler().set([this](offs_t offset, uint8_t data) { LOGMIC("MIC PIA: CB2_w\n"); });
|
||||
m_micpia->writepa_handler().set([this](offs_t offset, uint8_t data) { LOGMIC("MIC PIA: PA_w\n"); });
|
||||
m_micpia->writepb_handler().set([this](offs_t offset, uint8_t data) { LOGMIC("MIC PIA: PB_w\n"); });
|
||||
m_micpia->readpa_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("MIC PIA: PA_r\n"); return 0;});
|
||||
m_micpia->readpb_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("MIC PIA: PB_r\n"); return 0;});
|
||||
m_micpia->readca1_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("MIC PIA: CA1_r\n"); return 0;});
|
||||
m_micpia->readca2_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("MIC PIA: CA2_r\n"); return 0;});
|
||||
PIA6821(config, m_mic_pia, 0); // Main board PIA
|
||||
m_mic_pia->readcb1_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("<-MIC PIA: CB1 read\n"); return 0;});
|
||||
m_mic_pia->cb2_handler().set([this](offs_t offset, uint8_t data) { LOGMIC("->MIC PIA: CB2 write %d\n", data); });
|
||||
|
||||
PIA6821(config, m_diapia, 0); // Display PIA, controls how the CRTC accesses memory etc
|
||||
m_diapia->readcb1_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: CB1_r\n"); return 0;});
|
||||
m_diapia->cb2_handler().set([this](offs_t offset, uint8_t data) { LOGDIA("DIA PIA: CB2_w\n"); });
|
||||
m_diapia->writepa_handler().set([this](offs_t offset, uint8_t data) { LOGDIA("DIA PIA: PA_w\n"); });
|
||||
m_diapia->writepb_handler().set([this](offs_t offset, uint8_t data) { LOGDIA("DIA PIA: PB_w\n"); });
|
||||
m_diapia->readpa_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: PA_r\n"); return 0;});
|
||||
m_diapia->readpb_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: PB_r\n"); return 0;});
|
||||
m_diapia->readca1_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: CA1_r\n"); return 0;});
|
||||
m_diapia->readca2_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: CA2_r\n"); return 0;});
|
||||
/*
|
||||
* MIC PIA interface
|
||||
*
|
||||
* Port A (DDRA=0x7a)
|
||||
* 0 - PA0 input - not used
|
||||
* 1 - PA1 output - KB reset P11 pin 23 at connector 1 == KB reset 0 == no KB reset
|
||||
* 2 - PA2 input - MCP test mode 1 == no test mode 0 == in test mode,
|
||||
* 3 - PA3 output - not used (in DTC)
|
||||
* 4 - PA4 output - not used (in DTC)
|
||||
* 5 - PA5 output - Interrupt enable 1 == Int. out on P1:7 0 == no Int. out
|
||||
* 6 - PA6 output - I4 latch enable 1 == I4 will be latched 0 == no I4 latch
|
||||
* 7 - PA7 input - Button/MCP NMI 1 == NMI from DU button 0 == NMI from MCP P4:1=low
|
||||
* Note: At initialization a KB reset pulse will be sent as DDRA contains all zeros: PA I functions as a
|
||||
* high impedance input: "active level" for KB reset generation.
|
||||
*
|
||||
* Port B (DDRB=0xff)
|
||||
* 0 - PB0 output - Reset PC-error 1 == Reset PC error FF 0 == Memory PC used
|
||||
* or PC not used
|
||||
* 1 - PB1 output - VMAX/VMA 1 MPU 1 == VMAX gen by MPU 0 == VMA 1 gen by MPU
|
||||
* 2 - PB2 output - VMAX/VMA 1 DMA 1 == VMAX gen by DMA 0 == VMA 1 gen by DMA
|
||||
* 3 - PB3 output - Display Memory 1 == 4KB Display Memory 0 == 8KB Display Memory
|
||||
* 4 - PB4 output - Option Character Generator 1 == Enabled to MIC bus 0 == Disabled from MIC bus
|
||||
* 5 - PB5 output - MPU Addr 1 == Mode 1 0 == Mode 0
|
||||
* 6 - PB6 output - Reset 1 == Reset all but MPU 0 == No reset
|
||||
* and MIC PIA
|
||||
* 7 - PB7 output - not used
|
||||
*/
|
||||
m_mic_pia->writepa_handler().set([this](offs_t offset, uint8_t data)
|
||||
{
|
||||
LOGMIC("->MIC PIA: Port A write %02x\n", data);
|
||||
LOGKBD(" PA1 - KBD reset %s\n", BIT(data, 1) ? "active" : "inactive");
|
||||
m_kbd->rst_line_w(BIT(data, 1) ? ASSERT_LINE : CLEAR_LINE);
|
||||
LOGMIC(" PA5 - Int out %s\n", BIT(data, 5) ? "enabled": "disabled");
|
||||
LOGMIC(" PA6 - I4 latch %s\n", BIT(data, 6) ? "enabled": "disabled");
|
||||
});
|
||||
|
||||
ACIA6850(config, m_kbdacia, 0);
|
||||
//CLOCK(config, "acia_clock", ACIA_CLOCK).signal_handler().set(FUNC(alfaskop4110_state::write_acia_clock));
|
||||
m_mic_pia->writepb_handler().set([this](offs_t offset, uint8_t data)
|
||||
{
|
||||
LOGMIC("->MIC PIA: Port B write %02x\n", data);
|
||||
LOGMIC(" PB0 - Reset PC-error %s\n", BIT(data, 0) ? "active" : "inactive");
|
||||
LOGMIC(" PB1 - %s generated by MPU\n", BIT(data, 1) ? "VMAX" : "VMA 1");
|
||||
LOGMIC(" PB2 - %s generated by DMA\n", BIT(data, 2) ? "VMAX" : "VMA 1");
|
||||
LOGMIC(" PB3 - %sKB Display Memory\n", BIT(data, 3) ? "4" : "8");
|
||||
LOGMIC(" PB4 - Option Char Generator %s\n", BIT(data, 4) ? "enabled" : "disabled");
|
||||
LOGMIC(" PB5 - MPU Address Mode %s\n", BIT(data, 5) ? "1" : "0");
|
||||
LOGMIC(" PB6 - Reset of devices %s\n", BIT(data, 6) ? "active" : "inactive");
|
||||
});
|
||||
|
||||
m_mic_pia->readpa_handler().set([this](offs_t offset) -> uint8_t
|
||||
{
|
||||
uint8_t data = (1U << 2); // MCU is not in test mode
|
||||
LOGMIC("<-MIC PIA: Port A read\n");
|
||||
LOGMIC(" PA2 - MCU test mode %s\n", BIT(data, 2) ? "inactive" : "active");
|
||||
return 0;
|
||||
});
|
||||
m_mic_pia->readpb_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("<-MIC PIA: Port B read\n"); return 0;});
|
||||
m_mic_pia->readca1_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("<-MIC PIA: CA1 read\n"); return 0;});
|
||||
m_mic_pia->readca2_handler().set([this](offs_t offset) -> uint8_t { LOGMIC("<-MIC PIA: CA2 read\n"); return 0;});
|
||||
|
||||
PIA6821(config, m_dia_pia, 0); // Display PIA, controls how the CRTC accesses memory etc
|
||||
m_dia_pia->readcb1_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: CB1_r\n"); return 0;});
|
||||
m_dia_pia->cb2_handler().set([this](offs_t offset, uint8_t data) { LOGDIA("DIA PIA: CB2_w %d\n", data); });
|
||||
m_dia_pia->writepa_handler().set([this](offs_t offset, uint8_t data) { LOGDIA("DIA PIA: PA_w %02x\n", data); });
|
||||
m_dia_pia->writepb_handler().set([this](offs_t offset, uint8_t data) { LOGDIA("DIA PIA: PB_w %02x\n", data); });
|
||||
m_dia_pia->readpa_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: PA_r\n"); return 0;});
|
||||
m_dia_pia->readpb_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: PB_r\n"); return 0;});
|
||||
m_dia_pia->readca1_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: CA1_r\n"); return 0;});
|
||||
m_dia_pia->readca2_handler().set([this](offs_t offset) -> uint8_t { LOGDIA("DIA PIA: CA2_r\n"); return 0;});
|
||||
|
||||
/* The ACIA RxC and TxC are fed from the systemclock divided through a by 14 dividing 74163, from the tech manual:
|
||||
"A clock of 76 kHz is provided for the ACIA by the timing logic. ACIA divides this clock by 64 (Bit transfer rate 1188 Hz) and
|
||||
synchronizes internally to received data. Furthermore ACIA may provide interrupt (at level 3) when transmit register is empty,
|
||||
receive register is full or an error has occured. */
|
||||
ACIA6850(config, m_kbd_acia, XTAL(19'170'000) / 18);
|
||||
CLOCK(config, "acia_clock", (XTAL(19'170'000) / 18) / 14 ).signal_handler().set([this](int state) { m_kbd_acia->write_txc(state); m_kbd_acia->write_rxc(state); });
|
||||
m_kbd_acia->irq_handler().set("irq3", FUNC(input_merger_device::in_w<3>));
|
||||
m_kbd_acia->txd_handler().set([this](bool state)
|
||||
{
|
||||
if (m_txd != state)
|
||||
{
|
||||
LOGBITS("4110->KBD: %d\n", state);
|
||||
m_txd = state;
|
||||
m_kbd->rxd_w(m_txd);
|
||||
}
|
||||
});
|
||||
|
||||
MC6854(config, m_tia_adlc, XTAL(19'170'000) / 18);
|
||||
m_tia_adlc->out_irq_cb().set("irq7", FUNC(input_merger_device::in_w<7>));
|
||||
m_tia_adlc->out_rdsr_cb().set([this](bool state){ LOGDMA("TIA ADLC RDSR: %d\n", state); m_tia_dma->dreq_w<1>(state); });
|
||||
m_tia_adlc->out_tdsr_cb().set([this](bool state){ LOGDMA("TIA ADLC TDSR: %d\n", state); m_tia_dma->dreq_w<0>(state); });
|
||||
|
||||
MC6844(config, m_tia_dma, XTAL(19'170'000) / 18);
|
||||
//m_tia_dma->out_int_callback().set([this](bool state){ LOGDMA("TIA DMA IRQ: %d\n", state); }); // Used as DEND (end of dma) towards the ADLC through some logic
|
||||
m_tia_dma->out_drq1_callback().set([this](bool state){ LOGDMA("TIA DMA DRQ1: %d\n", state); m_tia_dma->dgrnt_w(state); });
|
||||
//m_tia_dma->out_drq2_callback().set([this](bool state){ LOGDMA("TIA DMA DRQ2: %d\n", state); }); // Not connected
|
||||
m_tia_dma->in_ior_callback<1>().set([this](offs_t offset) -> uint8_t { return m_tia_adlc->dma_r(); });
|
||||
m_tia_dma->out_memw_callback().set([this](offs_t offset, uint8_t data) { m_maincpu->space(AS_PROGRAM).write_byte(offset, data); });
|
||||
|
||||
/* 74LS273 latch inputs of interruptt sources */
|
||||
INPUT_MERGER_ANY_HIGH(config, "irq0").output_handler().set(FUNC(alfaskop4110_state::irq_w<0>));
|
||||
INPUT_MERGER_ANY_HIGH(config, "irq1").output_handler().set(FUNC(alfaskop4110_state::irq_w<1>));
|
||||
INPUT_MERGER_ANY_HIGH(config, "irq2").output_handler().set(FUNC(alfaskop4110_state::irq_w<2>));
|
||||
INPUT_MERGER_ANY_HIGH(config, "irq3").output_handler().set(FUNC(alfaskop4110_state::irq_w<3>));
|
||||
INPUT_MERGER_ANY_HIGH(config, "irq4").output_handler().set(FUNC(alfaskop4110_state::irq_w<4>));
|
||||
INPUT_MERGER_ANY_HIGH(config, "irq5").output_handler().set(FUNC(alfaskop4110_state::irq_w<5>));
|
||||
INPUT_MERGER_ANY_HIGH(config, "irq6").output_handler().set(FUNC(alfaskop4110_state::irq_w<6>));
|
||||
INPUT_MERGER_ANY_HIGH(config, "irq7").output_handler().set(FUNC(alfaskop4110_state::irq_w<7>));
|
||||
}
|
||||
|
||||
void alfaskop4110_state::machine_start()
|
||||
{
|
||||
save_item(NAME(m_irq));
|
||||
save_item(NAME(m_imsk));
|
||||
timer_set(attotime::from_msec(5000), TIMER_POLL_START);
|
||||
|
||||
// Hard wired inputs
|
||||
m_kbd_acia->write_cts(0);
|
||||
m_kbd_acia->write_dcd(0);
|
||||
}
|
||||
|
||||
void alfaskop4110_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
|
||||
{
|
||||
// Debug feature, inserts a poll SDLC frame through the ADLC, it ends up at address 0x140 in RAM through DMA
|
||||
switch (id)
|
||||
{
|
||||
case TIMER_POLL_START:
|
||||
/* The serial transfer of 8 bits is complete. Now trigger INT7. */
|
||||
LOGADLC("Starting poll message\n");
|
||||
m_tia_adlc->set_rx(0);
|
||||
timer_set(attotime::from_hz(300000), TIMER_POLL_BIT);
|
||||
break;
|
||||
case TIMER_POLL_BIT:
|
||||
if (flank)
|
||||
{
|
||||
if (index != 0 && index != 7 && BIT(txBuf[index], (pos % 8)) && ones == 5)
|
||||
{
|
||||
LOGADLC("%d%c", 2, (pos % 8) == 7 ? '\n' : ' ');
|
||||
m_tia_adlc->set_rx(0);
|
||||
ones = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
LOGADLC("%d%c", BIT(txBuf[index], (pos % 8)), (pos % 8) == 7 ? '\n' : ' ');
|
||||
m_tia_adlc->set_rx(BIT(txBuf[index], (pos % 8)));
|
||||
if (index != 0 && index != 7 && BIT(txBuf[index], (pos % 8)))
|
||||
ones++;
|
||||
else
|
||||
ones = 0;
|
||||
pos++;
|
||||
index = pos / 8;
|
||||
}
|
||||
}
|
||||
m_tia_adlc->rxc_w(flank ? 1 : 0);
|
||||
if (index < 8)
|
||||
timer_set(attotime::from_hz(300000) / 2, TIMER_POLL_BIT);
|
||||
flank = !flank;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void alfaskop4110_state::machine_reset()
|
||||
{
|
||||
m_irq = 0x00;
|
||||
m_kbd->rst_line_w(ASSERT_LINE);
|
||||
|
||||
// Hard wired inputs
|
||||
m_kbd_acia->write_cts(0);
|
||||
m_kbd_acia->write_dcd(0);
|
||||
}
|
||||
|
||||
void alfaskop4120_state::alfaskop4120(machine_config &config)
|
||||
@ -237,7 +597,7 @@ void alfaskop4120_state::alfaskop4120(machine_config &config)
|
||||
M6800(config, m_maincpu, XTAL(19'170'000) / 18); // Verified from service manual
|
||||
m_maincpu->set_addrmap(AS_PROGRAM, &alfaskop4120_state::mem_map);
|
||||
|
||||
PIA6821(config, m_micpia, 0); // Main board PIA
|
||||
PIA6821(config, m_mic_pia, 0); // Main Board PIA
|
||||
PIA6821(config, m_fdapia, 0); // Floppy Disk PIA
|
||||
}
|
||||
|
||||
@ -247,7 +607,7 @@ void alfaskop4101_state::alfaskop4101(machine_config &config)
|
||||
M6800(config, m_maincpu, XTAL(19'170'000) / 18); // Verified from service manual
|
||||
m_maincpu->set_addrmap(AS_PROGRAM, &alfaskop4101_state::mem_map);
|
||||
|
||||
PIA6821(config, m_micpia, 0); // Main board PIA
|
||||
PIA6821(config, m_mic_pia, 0); // Main board PIA
|
||||
}
|
||||
|
||||
/* ROM definitions */
|
||||
@ -257,6 +617,9 @@ ROM_START( alfaskop4110 ) // Display Unit
|
||||
ROM_REGION( 0x800, "chargen", ROMREGION_ERASEFF )
|
||||
ROM_LOAD( "e3405972067500.bin", 0x0000, 0x0400, CRC(fb12b549) SHA1(53783f62c5e51320a53e053fbcf8b3701d8a805f))
|
||||
ROM_LOAD( "e3405972067600.bin", 0x0400, 0x0400, CRC(c7069d65) SHA1(587efcbee036d4c0c5b936cc5d7b1f97b6fe6dba))
|
||||
ROM_REGION( 0xff, PLA1_TAG, 0 )
|
||||
//ROM_LOAD( "dtc_a_e34062_0100_ic50_e3405970303601_ml.bin", 0x00, 0xf5, CRC(b37395f2) SHA1(a00dc77d4bef084c0ddceef618986d83c69b1d65) ) // Signetics_N82S100N.bin MAXLOADER format
|
||||
ROM_LOAD( "dtc_a_e34062_0100_ic50_e3405970303601.bin", 0x00, 0xfa, CRC(16339b7a) SHA1(9b313a7526460dc9bcedfda25bece91c924f0ddc) ) // Signetics_N82S100N.bin DATAIO format
|
||||
ROM_END
|
||||
|
||||
ROM_START( alfaskop4120 ) // Flexible Disk Unit
|
||||
@ -271,7 +634,7 @@ ROM_END
|
||||
|
||||
/* Driver(S) */
|
||||
|
||||
// Only 4101 may exist as a driver in the end making the 4110 and 4120 as slots devices on the SS3 bus, time will tell
|
||||
// Only 4101 should exist as a driver in the end, making the 4110 and 4120 as slots devices on the SS3 bus, time will tell
|
||||
|
||||
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
|
||||
COMP( 1984, alfaskop4110, 0, 0, alfaskop4110, alfaskop4110, alfaskop4110_state, empty_init, "Ericsson", "Alfaskop Display Unit 4110", MACHINE_IS_SKELETON)
|
||||
|
||||
397
src/mame/machine/alfaskop_s41_kb.cpp
Normal file
397
src/mame/machine/alfaskop_s41_kb.cpp
Normal file
@ -0,0 +1,397 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders: Joakim Larsson Edström
|
||||
/**********************************************************************
|
||||
|
||||
Alfaskop 4110 keyboard, emulation of the KeyBoard Unit KBU 4140. which often
|
||||
was attached to the numerical Keyboard eXpansion Unit KXE 4141 which is not
|
||||
emulated yet. There is also an optional Magnetic Identification Device MID 4131
|
||||
|
||||
TTL-level bi-directional serial matrix keyboard
|
||||
|
||||
The KBU 4140 keyboard is controlled by a MC6802@3'579'000Hz in combo with a MC6846.
|
||||
The key matrix is scanned with the help of two 74LS164 which is also extended to the
|
||||
KXE 4141. The columns are read through a 74LS240. There are 8 LEDs which are
|
||||
latched by a 74LS374. The I/O port on the MC6846 is connected to a magnet strip
|
||||
reader through a MIA interface
|
||||
|
||||
The keyboard serial interface line is interpreted and generated by the timer in
|
||||
the MC6846 where both TX and Rx shares the same line on the keyboard side. The
|
||||
keyboard remains silent until spoken to by the host computer to avoid collisions.
|
||||
|
||||
Credits
|
||||
-------
|
||||
The MC6846 ROM and address decoder ROM were dumped by Dalby Datormuseum whom
|
||||
also provided documentation and schematics of the keyboard
|
||||
|
||||
https://sites.google.com/site/dalbydatormuseum/home
|
||||
|
||||
**********************************************************************/
|
||||
|
||||
#include "emu.h"
|
||||
#include "alfaskop_s41_kb.h"
|
||||
#include "cpu/m6800/m6800.h"
|
||||
|
||||
//**************************************************************************
|
||||
// CONFIGURABLE LOGGING
|
||||
//**************************************************************************
|
||||
#define LOG_IRQ (1U << 1)
|
||||
#define LOG_RESET (1U << 2)
|
||||
#define LOG_BITS (1U << 3)
|
||||
#define LOG_UI (1U << 4)
|
||||
#define LOG_LEDS (1U << 5)
|
||||
#define LOG_ROM (1U << 6)
|
||||
#define LOG_ADEC (1U << 7)
|
||||
#define LOG_IO (1U << 8)
|
||||
|
||||
//#define VERBOSE (LOG_GENERAL|LOG_IO|LOG_IRQ|LOG_LEDS|LOG_BITS|LOG_RESET)
|
||||
//#define LOG_OUTPUT_STREAM std::cout
|
||||
|
||||
#include "logmacro.h"
|
||||
|
||||
#define LOGIRQ(...) LOGMASKED(LOG_IRQ, __VA_ARGS__)
|
||||
#define LOGRST(...) LOGMASKED(LOG_RESET, __VA_ARGS__)
|
||||
#define LOGBITS(...) LOGMASKED(LOG_BITS, __VA_ARGS__)
|
||||
#define LOGUI(...) LOGMASKED(LOG_UI, __VA_ARGS__)
|
||||
#define LOGLEDS(...) if (!machine().side_effects_disabled()) LOGMASKED(LOG_LEDS, __VA_ARGS__)
|
||||
#define LOGROM(...) if (!machine().side_effects_disabled()) LOGMASKED(LOG_ROM, __VA_ARGS__)
|
||||
#define LOGADEC(...) if (!machine().side_effects_disabled()) LOGMASKED(LOG_ADEC, __VA_ARGS__)
|
||||
#define LOGIO(...) if (!machine().side_effects_disabled()) LOGMASKED(LOG_IO, __VA_ARGS__)
|
||||
|
||||
//**************************************************************************
|
||||
// MACROS / CONSTANTS
|
||||
//**************************************************************************
|
||||
|
||||
#define M6800_TAG "mcu"
|
||||
|
||||
namespace {
|
||||
|
||||
INPUT_PORTS_START(alfaskop_s41_kb)
|
||||
PORT_START("P15")
|
||||
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 6") PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR('6') PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) // 77
|
||||
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP +") PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR('+') // 78
|
||||
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 5") PORT_CODE(KEYCODE_5_PAD) PORT_CHAR('5') // 76
|
||||
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("* PRINT") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('*') PORT_CHAR(UCHAR_MAMEKEY(PRTSCR)) // 55
|
||||
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("R Shift") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) // 54
|
||||
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') // 53
|
||||
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(". :") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR(':') // 52
|
||||
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F5") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5)) // 63
|
||||
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F6") PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6)) // 64
|
||||
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_UNUSED ) // no scancode is sent
|
||||
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) // 29
|
||||
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(", ;") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR(';') // 51
|
||||
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d') // 32
|
||||
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x') // 45
|
||||
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c') // 46
|
||||
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j') // 36
|
||||
|
||||
PORT_START("P14")
|
||||
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_UNUSED ) // 00 - keyboard error
|
||||
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK") PORT_CODE(KEYCODE_PAUSE) PORT_CHAR(UCHAR_MAMEKEY(PAUSE)) // 70
|
||||
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 7") PORT_CODE(KEYCODE_7_PAD) PORT_CHAR('7') PORT_CHAR(UCHAR_MAMEKEY(HOME)) // 71
|
||||
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_UNUSED ) // ff - keyboard error
|
||||
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('^') PORT_CHAR('~') PORT_CHAR(']') // 27
|
||||
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR(0x00e5) PORT_CHAR(0x00c5) PORT_CHAR('[') // 26 å Å
|
||||
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p') // 25
|
||||
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F1") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) // 59
|
||||
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F2") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2)) // 60
|
||||
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') // 17
|
||||
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') // 18
|
||||
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') // 24
|
||||
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') // 19
|
||||
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') // 20
|
||||
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') // 21
|
||||
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') // 23
|
||||
|
||||
PORT_START("P13")
|
||||
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_NUMLOCK) PORT_CHAR(UCHAR_MAMEKEY(NUMLOCK)) // 69
|
||||
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_UNUSED ) // ff - keyboard error
|
||||
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BS DEL") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_CHAR(UCHAR_MAMEKEY(DEL)) // 14
|
||||
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') // 13
|
||||
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') // 12
|
||||
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') // 11
|
||||
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(') // 10
|
||||
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') // 02
|
||||
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) // 01
|
||||
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') // 03
|
||||
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') // 04
|
||||
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') // 09
|
||||
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') // 05
|
||||
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') // 06
|
||||
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^') // 07
|
||||
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') // 08
|
||||
|
||||
PORT_START("P12")
|
||||
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 9") PORT_CODE(KEYCODE_9_PAD) PORT_CHAR('9') PORT_CHAR(UCHAR_MAMEKEY(PGUP)) // 73
|
||||
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP -") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD)) // 74
|
||||
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 8") PORT_CODE(KEYCODE_8_PAD) PORT_CODE(KEYCODE_UP) PORT_CHAR('8') PORT_CHAR(UCHAR_MAMEKEY(UP)) // 72
|
||||
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~') // 41
|
||||
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"') // 40
|
||||
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') // 39
|
||||
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') // 38
|
||||
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F3") PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3)) // 61
|
||||
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F4") PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4)) // 62
|
||||
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') // 16
|
||||
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("TAB") PORT_CODE(KEYCODE_TAB) PORT_CHAR(9) // 15
|
||||
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') // 37
|
||||
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') // 33
|
||||
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') // 34
|
||||
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') // 35
|
||||
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') // 22
|
||||
|
||||
PORT_START("P11")
|
||||
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(COMMA_PAD)) // 83
|
||||
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) // 28
|
||||
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR('0') PORT_CHAR(UCHAR_MAMEKEY(INSERT)) // 82
|
||||
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_UNUSED ) // 89 - no key
|
||||
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_UNUSED ) // 86 - no key
|
||||
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_UNUSED ) // 87 - no key
|
||||
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNUSED ) // 88 - no key
|
||||
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F9") PORT_CODE(KEYCODE_F9) PORT_CHAR(UCHAR_MAMEKEY(F9)) // 67
|
||||
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F10") PORT_CODE(KEYCODE_F10) PORT_CHAR(UCHAR_MAMEKEY(F10)) // 68
|
||||
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_UNUSED ) // scan code ff - keyboard error
|
||||
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') // 43
|
||||
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) // 58
|
||||
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT LOCK") PORT_CODE(KEYCODE_LALT) // 56
|
||||
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_UNUSED ) // 85 - no key
|
||||
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') // 47
|
||||
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') // 57
|
||||
|
||||
PORT_START("P10")
|
||||
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 3") PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_PGDN) // 81
|
||||
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_UNUSED ) // ff - keyboard error
|
||||
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 2") PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(2_PAD)) // 80
|
||||
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("NEW LINE") PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD)) // 84 (programmable, default is 28)
|
||||
PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 1") PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD)) // 79
|
||||
PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 4") PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR('4') PORT_CHAR(UCHAR_MAMEKEY(LEFT)) // 75
|
||||
PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNUSED ) // ff - keyboard error
|
||||
PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F7") PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7)) // 65
|
||||
PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F8") PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8)) // 66
|
||||
PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) // 42
|
||||
PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') // 44
|
||||
PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') // 50
|
||||
PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') // 30
|
||||
PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') // 31
|
||||
PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') // 48
|
||||
PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') // 49
|
||||
INPUT_PORTS_END
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// ROM( alfaskop_s41_kb )
|
||||
//-------------------------------------------------
|
||||
|
||||
ROM_START( alfaskop_s41_kb )
|
||||
ROM_REGION( 0x800, M6800_TAG, 0 )
|
||||
ROM_LOAD( "kbc_e34066_0000_ic3.bin", 0x000, 0x800, CRC(a1232241) SHA1(45d1b038bfbd04e1b7e3718a27202280c5257989) )
|
||||
ROM_REGION( 0x20, "ad_rom", 0 ) // Address decoder
|
||||
ROM_LOAD( "kbc_e34066_0000_ic4_e3405970280400.bin", 0x00, 0x20, CRC(f26acca3) SHA1(ac8c607d50bb588c1da4ad1602665c785ebd29b3) )
|
||||
ROM_END
|
||||
|
||||
} // anonymous namespace
|
||||
|
||||
//**************************************************************************
|
||||
// DEVICE DEFINITIONS
|
||||
//**************************************************************************
|
||||
|
||||
DEFINE_DEVICE_TYPE(ALFASKOP_S41_KB, alfaskop_s41_keyboard_device, "alfaskop_s41_kb", "Alfaskop 4110 keyboard")
|
||||
|
||||
//**************************************************************************
|
||||
// LIVE DEVICE
|
||||
//**************************************************************************
|
||||
|
||||
//-------------------------------------------------
|
||||
// alfaskop_s41_keyboard_device - constructor
|
||||
//-------------------------------------------------
|
||||
|
||||
alfaskop_s41_keyboard_device::alfaskop_s41_keyboard_device(
|
||||
machine_config const &mconfig,
|
||||
char const *tag,
|
||||
device_t *owner,
|
||||
uint32_t clock)
|
||||
: device_t(mconfig, ALFASKOP_S41_KB, tag, owner, clock)
|
||||
, m_mcu(*this, M6800_TAG)
|
||||
, m_mc6846(*this, "mc6846")
|
||||
, m_rows(*this, "P1%u", 0)
|
||||
, m_txd_cb(*this)
|
||||
, m_leds_cb(*this)
|
||||
, m_rxd_high(true)
|
||||
, m_txd_high(true)
|
||||
, m_hold(true)
|
||||
, m_col_select(0)
|
||||
, m_p1(0)
|
||||
, m_leds(0)
|
||||
{
|
||||
}
|
||||
|
||||
WRITE_LINE_MEMBER(alfaskop_s41_keyboard_device::rxd_w)
|
||||
{
|
||||
LOGBITS("KBD bit presented: %d\n", state);
|
||||
//m_rxd_high = CLEAR_LINE != state;
|
||||
}
|
||||
|
||||
// WRITE_LINE_MEMBER(alfaskop_s41_keyboard_device::hold_w)
|
||||
// {
|
||||
// m_hold = CLEAR_LINE == state;
|
||||
// }
|
||||
|
||||
WRITE_LINE_MEMBER(alfaskop_s41_keyboard_device::rst_line_w)
|
||||
{
|
||||
if (state == CLEAR_LINE)
|
||||
{
|
||||
m_mcu->set_input_line(INPUT_LINE_RESET, CLEAR_LINE);
|
||||
LOGRST("KBD: Keyboard mcu reset line is cleared\n");
|
||||
}
|
||||
else
|
||||
{
|
||||
m_mcu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
|
||||
LOGRST("KBD: Keyboard mcu reset line is asserted\n");
|
||||
}
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_start - device specific startup
|
||||
//-------------------------------------------------
|
||||
|
||||
void alfaskop_s41_keyboard_device::device_start()
|
||||
{
|
||||
m_txd_cb.resolve_safe();
|
||||
m_leds_cb.resolve_safe();
|
||||
|
||||
save_item(NAME(m_rxd_high));
|
||||
save_item(NAME(m_txd_high));
|
||||
save_item(NAME(m_col_select));
|
||||
|
||||
m_rxd_high = true;
|
||||
m_txd_high = true;
|
||||
m_col_select = 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//-------------------------------------------------
|
||||
// device_add_mconfig - add device configuration
|
||||
//-------------------------------------------------
|
||||
|
||||
void alfaskop_s41_keyboard_device::device_add_mconfig(machine_config &config)
|
||||
{
|
||||
M6802(config, m_mcu, XTAL(3'579'545)); // Crystal verified from schematics
|
||||
m_mcu->set_addrmap(AS_PROGRAM, &alfaskop_s41_keyboard_device::alfaskop_s41_kb_mem);
|
||||
|
||||
MC6846(config, m_mc6846, XTAL(3'579'545) / 4); // Driven by E from 6802 == XTAL / 4
|
||||
m_mc6846->irq().set([this](bool state)
|
||||
{
|
||||
LOGIRQ(" [timer IRQ: %s] ", state == ASSERT_LINE ? "asserted" : "cleared");
|
||||
m_mcu->set_input_line(M6802_IRQ_LINE, state);
|
||||
});
|
||||
m_mc6846->cp2().set([this](bool state){ LOG("CP2:%d\n", state); });
|
||||
// MIA ID interrupt: m_mc6846->set_input_cp1(1);
|
||||
m_mc6846->cto().set([this](bool state){ LOG("CTO:%d\n", state); }); // Not connected to anything
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// input_ports - device-specific input ports
|
||||
//-------------------------------------------------
|
||||
|
||||
ioport_constructor alfaskop_s41_keyboard_device::device_input_ports() const
|
||||
{
|
||||
return INPUT_PORTS_NAME( alfaskop_s41_kb );
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// ADDRESS_MAP( alfaskop_s41_kb_mem )
|
||||
//-------------------------------------------------
|
||||
|
||||
void alfaskop_s41_keyboard_device::alfaskop_s41_kb_mem(address_map &map)
|
||||
{
|
||||
map(0x0000, 0x007f).ram(); // Internal RAM
|
||||
/* A 32 byte decoder ROM connects A0-A4 to A11, A12, A13, A15 and to an external port pin, A14 is not decoded!
|
||||
* c3 c3 c3 c3 c3 c3 c3 c3 c3 c3 c3 c3 c3 c3 c3 c3 - if external port pin is low
|
||||
* c3 c3 c3 c3 c5 c6 cb c3 d3 c3 c3 c3 c3 c3 43 f3 - if external port pin is high - normal operation
|
||||
*
|
||||
* Decoder rom byte bits as follows
|
||||
* 0 - 0x01 Start scanning
|
||||
* 1 - 0x02 read col
|
||||
* 2 - 0x04 shift col clock
|
||||
* 3 - 0x08 set lamp data
|
||||
* 4 - 0x10 CS1 mc6846 I/O access - active low
|
||||
* 5 - 0x20 CS0 mc6846 ROM access - active high
|
||||
* 6 - 0x40 n/c?
|
||||
* 7 - 0x80 to KBX
|
||||
*
|
||||
* F3 <- 0x0f <- 1-11 1 == b800-bfff, f800-ffff // 1111 0011 MC6846 Internal ROM access (CS0 - active high)
|
||||
* 43 <- 0x0e <- 1-11 0 == b000-b7ff, f000-f7ff // 0100 0011
|
||||
* c3 <- 0x0d <- 1-10 1 == a800-afff, e800-efff // 1100 0011
|
||||
* c3 <- 0x0c <- 1-10 0 == a000-a7ff, e000-e7ff // 1100 0011
|
||||
* c3 <- 0x0b <- 1-01 1 == 9800-9fff, d800-dfff // 1100 0011
|
||||
* c3 <- 0x0a <- 1-01 0 == 9000-97ff, d000-d7ff // 1100 0011
|
||||
* c3 <- 0x09 <- 1-00 1 == 8800-8fff, c800-cfff // 1100 0011
|
||||
* d3 <- 0x08 <- 1-00 0 == 8000-87ff, c000-c7ff // 1101 0011 MC6846 Internal I/O access (CS1 - active high)
|
||||
|
||||
* c3 <- 0x07 <- 0-11 1 == 3800-3fff, 7800-7fff // 1100 0011
|
||||
* cb <- 0x06 <- 0-11 0 == 3000-37ff, 7000-77ff // 1100 1011 Set lamp data
|
||||
* c6 <- 0x05 <- 0-10 1 == 2800-2fff, 6800-6fff // 1100 0110 start scan
|
||||
* c5 <- 0x04 <- 0-10 0 == 2000-27ff, 6000-67ff // 1100 0101 read col
|
||||
* c3 <- 0x03 <- 0-01 1 == 1800-1fff, 5800-5fff // 1100 0011
|
||||
* c3 <- 0x02 <- 0-01 0 == 1000-17ff, 5000-57ff // 1100 0011
|
||||
* c3 <- 0x01 <- 0-00 1 == 0800-0fff, 4800-4fff // 1100 0011
|
||||
* c3 <- 0x00 <- 0-00 0 == 0000-07ff, 4000-47ff // 1100 0011
|
||||
*/
|
||||
map(0x0080, 0xffff).lrw8(NAME([this](address_space &space, offs_t offset) -> uint8_t
|
||||
{
|
||||
uint16_t addr = offset + 0x80;
|
||||
uint8_t index = 0x10 | ((((addr & 0x8000) | ((addr & 0x3800) << 1)) >> 12) & 0x000f); // 0x10 | (((A15 | A13 | A12 | A11) >> 12)
|
||||
uint8_t ret = 0;
|
||||
LOGADEC("address_r %04x -> index %02x: %02x\n", offset + 0x80, index, memregion("ad_rom")->base ()[index]);
|
||||
switch (memregion("ad_rom")->base ()[index])
|
||||
{
|
||||
case 0xf3:
|
||||
ret = memregion(M6800_TAG)->base ()[addr & 0x07ff];
|
||||
LOGROM(" - ROM %04x: %02x\n", addr & 0x7ff, ret);
|
||||
break;
|
||||
case 0xd3:
|
||||
LOGIO(" - I/O read mc6846 %04x", addr & 0x07);
|
||||
ret = m_mc6846->read(space, (offs_t)(addr & 0x07));
|
||||
LOGIO(": %02x\n", ret);
|
||||
break;
|
||||
case 0xc3:
|
||||
break; // Idle
|
||||
default:
|
||||
logerror(" - unmapped read access at %04x through %02x\n", addr, memregion("ad_rom")->base ()[index]);
|
||||
}
|
||||
return ret;
|
||||
}),
|
||||
NAME( [this](address_space &space, offs_t offset, uint8_t data)
|
||||
{
|
||||
uint16_t addr = offset + 0x80;
|
||||
uint8_t index = 0x10 | ((((addr & 0x8000) | ((addr & 0x3800) << 1)) >> 12) & 0x000f); // 0x10 | (((A15 | A13 | A12 | A11) >> 12)
|
||||
LOGADEC("address_w %04x -> index %02x: %02x\n", offset + 0x80, index, memregion("ad_rom")->base ()[index]);
|
||||
switch (memregion("ad_rom")->base ()[index])
|
||||
{
|
||||
case 0xd3:
|
||||
LOGIO(" - I/O write mc6846 %04x, %02x\n", addr & 0x07, data);
|
||||
m_mc6846->write(space, (offs_t)(addr & 0x07), data);
|
||||
break;
|
||||
case 0xcb: // Leds
|
||||
if (m_leds != data)
|
||||
{
|
||||
m_leds_cb(data); m_leds = data;
|
||||
LOGLEDS(" - I/O write LEDs %04x, %02x\n", addr, data);
|
||||
}
|
||||
break;
|
||||
case 0xc3:
|
||||
break; // Idle
|
||||
default:
|
||||
logerror(" - unmapped write access at %04x, %02x through %02x\n", addr, data, memregion("ad_rom")->base ()[index]);
|
||||
}
|
||||
}));
|
||||
// map(0xf800, 0xffff).rom().region(M6800_TAG,0);
|
||||
}
|
||||
|
||||
//-------------------------------------------------
|
||||
// rom_region - device-specific ROM region
|
||||
//-------------------------------------------------
|
||||
|
||||
const tiny_rom_entry *alfaskop_s41_keyboard_device::device_rom_region() const
|
||||
{
|
||||
return ROM_NAME( alfaskop_s41_kb );
|
||||
}
|
||||
48
src/mame/machine/alfaskop_s41_kb.h
Normal file
48
src/mame/machine/alfaskop_s41_kb.h
Normal file
@ -0,0 +1,48 @@
|
||||
// license:BSD-3-Clause
|
||||
// copyright-holders:Joakim Larsson Edström
|
||||
#ifndef MAME_MACHINE_ALFASKOP_S41_KB_H
|
||||
#define MAME_MACHINE_ALFASKOP_S41_KB_H
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "cpu/m6800/m6800.h"
|
||||
#include "machine/mc6846.h"
|
||||
|
||||
DECLARE_DEVICE_TYPE(ALFASKOP_S41_KB, alfaskop_s41_keyboard_device)
|
||||
|
||||
class alfaskop_s41_keyboard_device : public device_t
|
||||
{
|
||||
public:
|
||||
auto txd_cb() { return m_txd_cb.bind(); }
|
||||
auto leds_cb() { return m_leds_cb.bind(); }
|
||||
|
||||
alfaskop_s41_keyboard_device(machine_config const &mconfig, char const *tag, device_t *owner, uint32_t clock = 0);
|
||||
|
||||
DECLARE_INPUT_CHANGED_MEMBER(key);
|
||||
DECLARE_WRITE_LINE_MEMBER(rxd_w);
|
||||
//DECLARE_WRITE_LINE_MEMBER(hold_w);
|
||||
DECLARE_WRITE_LINE_MEMBER(rst_line_w);
|
||||
|
||||
protected:
|
||||
virtual void device_start() override;
|
||||
virtual void device_add_mconfig(machine_config &config) override;
|
||||
virtual ioport_constructor device_input_ports() const override;
|
||||
virtual tiny_rom_entry const *device_rom_region() const override;
|
||||
|
||||
required_device<m6802_cpu_device> m_mcu;
|
||||
required_device<mc6846_device> m_mc6846;
|
||||
required_ioport_array<6> m_rows;
|
||||
devcb_write_line m_txd_cb; // Callback for KBD-> S41
|
||||
devcb_write8 m_leds_cb; // Callback for all 8 leds -> layout
|
||||
|
||||
bool m_rxd_high; // state of Rx input line
|
||||
bool m_txd_high; // state of Tx output line
|
||||
bool m_hold;
|
||||
uint16_t m_col_select;
|
||||
uint8_t m_p1;
|
||||
uint8_t m_leds;
|
||||
|
||||
void alfaskop_s41_kb_mem(address_map &map);
|
||||
};
|
||||
|
||||
#endif // MAME_MACHINE_ALFASKOP_S41_KB_H
|
||||
@ -7429,9 +7429,19 @@ static int command_convert(int argc, char *argv[])
|
||||
|
||||
/* read the binary data */
|
||||
err = jedbin_parse(srcbuf, srcbuflen, &jed);
|
||||
switch (err)
|
||||
|
||||
if (err == JEDERR_INVALID_DATA)
|
||||
{
|
||||
case JEDERR_INVALID_DATA: fprintf(stderr, "Fatal error: Invalid binary JEDEC file\n"); free(srcbuf); return 1;
|
||||
fprintf(stderr, "Fatal error: Invalid binary JEDEC file\n");
|
||||
free(srcbuf);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (jed.binfmt == DATAIO) // DATAIO is detected and not supported yet, it has swapped inverted/non-inverted line fuses
|
||||
{
|
||||
fprintf(stderr, "Fatal error: Unsupported DATAIO PLA format detected\n");
|
||||
free(srcbuf);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* print out data */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user