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https://github.com/holub/mame
synced 2025-04-23 00:39:36 +03:00
atronic.cpp: Add more onboard devices, including new PCF8584 skeleton (nw)
This commit is contained in:
AJR
parent
ab68b239f1
commit
de57ef7b97
@ -2265,6 +2265,18 @@ if (MACHINES["PCF8583"]~=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/pcf8584.h,MACHINES["PCF8584"] = true
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---------------------------------------------------
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if (MACHINES["PCF8584"]~=null) then
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files {
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MAME_DIR .. "src/devices/machine/pcf8584.cpp",
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MAME_DIR .. "src/devices/machine/pcf8584.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/pcf8593.h,MACHINES["PCF8593"] = true
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@ -446,7 +446,7 @@ MACHINES["DS1204"] = true
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MACHINES["DS1205"] = true
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MACHINES["DS1302"] = true
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--MACHINES["DS1315"] = true
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--MACHINES["DS1386"] = true
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MACHINES["DS1386"] = true
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MACHINES["DS17X85"] = true
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MACHINES["DS1994"] = true
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MACHINES["DS2401"] = true
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@ -558,6 +558,8 @@ MACHINES["OUTPUT_LATCH"] = true
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MACHINES["PC_FDC"] = true
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MACHINES["PC_LPT"] = true
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--MACHINES["PCCARD"] = true
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--MACHINES["PCF8583"] = true
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MACHINES["PCF8584"] = true
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MACHINES["PCF8593"] = true
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MACHINES["PCI"] = true
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MACHINES["PCKEYBRD"] = true
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@ -568,6 +568,7 @@ MACHINES["PC_FDC"] = true
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MACHINES["PC_LPT"] = true
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MACHINES["PCCARD"] = true
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MACHINES["PCF8583"] = true
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--MACHINES["PCF8584"] = true
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MACHINES["PCF8593"] = true
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MACHINES["PCI"] = true
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MACHINES["PCKEYBRD"] = true
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245
src/devices/machine/pcf8584.cpp
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245
src/devices/machine/pcf8584.cpp
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@ -0,0 +1,245 @@
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// license:BSD-3-Clause
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// copyright-holders:AJR
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/**********************************************************************
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Philips PCF8584 I²C Bus Controller
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This is a comprehensive protocol interface chip for Philips' I²C
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serial bus, supporting master and slave modes for both receiving
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and transmitting data. The register interface is similar but not
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identical to that provided by certain Philips 80C51-derived
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microcontrollers.
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TODO: actually implement the protocol
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**********************************************************************/
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#include "emu.h"
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#include "pcf8584.h"
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#define VERBOSE 1
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#include "logmacro.h"
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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// device type definition
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DEFINE_DEVICE_TYPE(PCF8584, pcf8584_device, "pcf8584", "PCF8584 I2C Bus Controller")
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//**************************************************************************
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// LOOKUP TABLES
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//**************************************************************************
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// prescalers based on 1.5 MHz internal frequency
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const u32 pcf8584_device::s_prescaler[4] = { 50, 100, 400, 3000 };
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// dividers for clock input
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const u32 pcf8584_device::s_divider[8] = { 2, 2, 2, 2, 3, 4, 5, 8 };
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// debugging strings
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const char *const pcf8584_device::s_nominal_clock[8] = { "3", "3", "3", "3", "4.43", "6", "8", "12" };
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const char *const pcf8584_device::s_bus_function[4] = { "NOP", "stop", "start", "data chaining" };
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//**************************************************************************
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// DEVICE CONSTRUCTION AND INITIALIZATION
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//**************************************************************************
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//-------------------------------------------------
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// pcf8584_device - constructor
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//-------------------------------------------------
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pcf8584_device::pcf8584_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
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: device_t(mconfig, PCF8584, tag, owner, clock)
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, m_sda_callback(*this)
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, m_sda_out_callback(*this)
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, m_scl_callback(*this)
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, m_int_callback(*this)
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, m_68k_bus(false)
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, m_s0_data_buffer(0)
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, m_s0_shift_register(0)
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, m_s0_own_address(0)
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, m_s1_status(0)
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, m_s1_control(0)
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, m_s2_clock(0)
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, m_s3_vector(0)
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{
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}
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//-------------------------------------------------
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// device_resolve_objects - resolve objects that
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// may be needed for other devices to set
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// initial conditions at start time
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//-------------------------------------------------
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void pcf8584_device::device_resolve_objects()
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{
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m_sda_callback.resolve_safe(1);
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m_sda_out_callback.resolve_safe();
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m_scl_callback.resolve_safe();
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m_int_callback.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 pcf8584_device::device_start()
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{
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// register internal state
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save_item(NAME(m_s0_data_buffer));
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save_item(NAME(m_s0_shift_register));
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save_item(NAME(m_s0_own_address));
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save_item(NAME(m_s1_status));
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save_item(NAME(m_s1_control));
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save_item(NAME(m_s2_clock));
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save_item(NAME(m_s3_vector));
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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 pcf8584_device::device_reset()
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{
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// reset all flags except for PIN
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m_s1_status = 0x80;
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m_s1_control = 0x00;
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// vector isn't actually set to 0x0f until R/_W is pulled low without _CS, but who's counting?
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m_s3_vector = m_68k_bus ? 0x0f : 0x00;
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}
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//**************************************************************************
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// REGISTER INTERFACE
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//**************************************************************************
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//-------------------------------------------------
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// set_shift_register - write data to S0
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//-------------------------------------------------
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void pcf8584_device::set_shift_register(u8 data)
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{
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LOG("%s: Shift register = %s%02XH\n", machine().describe_context(), data >= 0xa0 ? "0" : "", data);
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m_s0_shift_register = data;
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}
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//-------------------------------------------------
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// set_own_address - write data to S0'
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//-------------------------------------------------
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void pcf8584_device::set_own_address(u8 data)
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{
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LOG("%s: Own address = %s%02XH\n", machine().describe_context(), (data & 0x7f) >= 0x60 ? "0" : "", (data << 1) & 0xfe);
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m_s0_own_address = data;
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}
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//-------------------------------------------------
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// set_control - write data to S1
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//-------------------------------------------------
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void pcf8584_device::set_control(u8 data)
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{
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if (BIT(data, 7) != BIT(m_s1_status, 7))
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{
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LOG("%s: PIN %sactive\n", machine().describe_context(), BIT(data, 7) ? "in" : "");
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if (BIT(data, 7))
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m_s1_status = 0x80;
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else
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m_s1_status &= 0x7f;
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}
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if (BIT(data, 6) != BIT(m_s1_control, 6))
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LOG("%s: Serial output %sabled%s\n", machine().describe_context(), BIT(data, 6) ? "en" : "dis",
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(data & 0x60) == 0x60 ? " (4-wire)" : "");
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if (BIT(data, 3) != BIT(m_s1_control, 3))
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LOG("%s: Interrupt output %sabled\n", machine().describe_context(), BIT(data, 3) ? "en" : "dis");
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if ((data & 0x06) != (m_s1_control & 0x06))
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LOG("%s: Bus function = %s\n", machine().describe_context(), s_bus_function[(data & 0x06) >> 1]);
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if (BIT(data, 0) != BIT(m_s1_control, 0))
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LOG("%s: Acknowledge pulse %sabled\n", machine().describe_context(), BIT(data, 0) ? "en" : "dis");
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m_s1_control = data & 0x7f;
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}
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//-------------------------------------------------
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// set_clock_frequency - write data to S2
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//-------------------------------------------------
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void pcf8584_device::set_clock_frequency(u8 data)
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{
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LOG("%s: SCL frequency = %.2f kHz (fCLK is nominally %s MHz)\n", machine().describe_context(),
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(clocks_to_attotime(s_divider[(data & 0x1c) >> 2] * s_prescaler[data & 0x03]) / 3).as_hz() / 1000.0,
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s_nominal_clock[(data & 0x1c) >> 2]);
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m_s2_clock = data & 0x1f;
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}
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//-------------------------------------------------
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// set_vector - write data to S3
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//-------------------------------------------------
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void pcf8584_device::set_vector(u8 data)
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{
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LOG("%s: Interrupt vector = %s%02XH\n", machine().describe_context(), data >= 0xa0 ? "0" : "", data);
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m_s3_vector = data;
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}
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//-------------------------------------------------
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// read - input from register to bus
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//-------------------------------------------------
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u8 pcf8584_device::read(offs_t offset)
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{
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if (BIT(offset, 0))
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return eso() ? m_s1_status : m_s1_control | (m_s1_status & 0x80);
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else if (es2() && !es1())
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return m_s3_vector;
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else if (eso())
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return m_s0_data_buffer;
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else if (es1())
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return m_s2_clock;
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else
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return m_s0_own_address;
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}
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//-------------------------------------------------
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// write - output from bus to register
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//-------------------------------------------------
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void pcf8584_device::write(offs_t offset, u8 data)
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{
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if (BIT(offset, 0))
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set_control(data);
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else if (es2() && !es1())
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set_vector(data);
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else if (eso())
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set_shift_register(data);
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else if (es1())
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set_clock_frequency(data);
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else
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set_own_address(data);
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}
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//-------------------------------------------------
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// iack - acknowledge interrupt with vector
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//-------------------------------------------------
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IRQ_CALLBACK_MEMBER(pcf8584_device::iack)
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{
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return m_s3_vector;
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}
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101
src/devices/machine/pcf8584.h
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101
src/devices/machine/pcf8584.h
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@ -0,0 +1,101 @@
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// license:BSD-3-Clause
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// copyright-holders:AJR
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/**********************************************************************
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Philips PCF8584 I²C Bus Controller
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***********************************************************************
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____ ____
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CLK 1 |* \_/ | 20 Vdd
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(SDA OUT) SDA 2 | | 19 _RESET/_STROBE
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(SCL IN) SCL 3 | | 18 _WR (R/_W)
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(SDA IN) _IACK 4 | | 17 _CS
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(SCL OUT) _INT 5 | | 16 _RD (_DTACK)
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A0 6 | PCF8584 | 15 DB7
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DB0 7 | | 14 DB6
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DB1 8 | | 13 DB5
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DB2 9 | | 12 DB4
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Vss 10 |___________| 11 DB3
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**********************************************************************/
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#ifndef MAME_MACHINE_PCF8584_H
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#define MAME_MACHINE_PCF8584_H 1
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#pragma once
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> pcf8584_device
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class pcf8584_device : public device_t
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{
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static const u32 s_prescaler[4];
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static const u32 s_divider[8];
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static const char *const s_nominal_clock[8];
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static const char *const s_bus_function[4];
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public:
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// device type constructor
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pcf8584_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
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// callback configuration
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auto sda_cb() { return m_sda_callback.bind(); }
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auto sda_out_cb() { return m_sda_out_callback.bind(); }
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auto scl_cb() { return m_scl_callback.bind(); }
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auto int_cb() { return m_int_callback.bind(); }
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// bus type configuration
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void set_80xx_bus() { m_68k_bus = false; }
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void set_68000_bus() { m_68k_bus = true; }
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// CPU interface
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u8 read(offs_t offset);
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void write(offs_t offset, u8 data);
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IRQ_CALLBACK_MEMBER(iack);
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protected:
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// device-specific overrides
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virtual void device_resolve_objects() override;
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virtual void device_start() override;
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virtual void device_reset() override;
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private:
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// internal helpers
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bool eso() const { return BIT(m_s1_control, 6); }
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bool es1() const { return BIT(m_s1_control, 5); }
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bool es2() const { return BIT(m_s1_control, 4); }
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bool eni() const { return BIT(m_s1_control, 3); }
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// write helpers
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void set_shift_register(u8 data);
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void set_own_address(u8 data);
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void set_control(u8 data);
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void set_clock_frequency(u8 data);
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void set_vector(u8 data);
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// callback objects
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devcb_read_line m_sda_callback;
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devcb_write_line m_sda_out_callback;
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devcb_write_line m_scl_callback;
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devcb_write_line m_int_callback;
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// misc. parameters
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bool m_68k_bus;
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// internal registers
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u8 m_s0_data_buffer;
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u8 m_s0_shift_register;
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u8 m_s0_own_address;
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u8 m_s1_status;
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u8 m_s1_control;
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u8 m_s2_clock;
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u8 m_s3_vector;
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};
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// device type declaration
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DECLARE_DEVICE_TYPE(PCF8584, pcf8584_device)
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#endif // MAME_MACHINE_PCF8584_H
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@ -317,6 +317,9 @@ Markings bottom: 6 470.5020 00.07
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#include "emu.h"
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#include "cpu/z180/z180.h"
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#include "cpu/tms34010/tms34010.h"
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#include "machine/ds1386.h"
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#include "machine/pcf8584.h"
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#include "machine/z80scc.h"
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#include "emupal.h"
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#include "screen.h"
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#include "video/ramdac.h"
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@ -336,6 +339,11 @@ public:
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void atronic(machine_config &config);
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private:
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u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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u8 serial_r();
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void serial_w(u8 data);
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void atronic_map(address_map &map);
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void atronic_portmap(address_map &map);
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@ -357,18 +365,39 @@ private:
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};
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u32 atronic_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect )
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{
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return 0;
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}
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u8 atronic_state::serial_r()
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{
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// bit 3 = serial input?
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return 0xff;
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}
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void atronic_state::serial_w(u8 data)
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{
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// bits 7 & 6 = serial clock and data?
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}
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void atronic_state::atronic_map(address_map &map)
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{
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map(0x00000, 0x7ffff).rom();
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map(0xf8000, 0xfffff).ram();
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map(0xf8000, 0xfffff).rw("timekpr", FUNC(ds1386_32k_device::data_r), FUNC(ds1386_32k_device::data_w));
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}
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void atronic_state::atronic_portmap(address_map &map)
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{
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// ADDRESS_MAP_GLOBAL_MASK(0xff)
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map.unmap_value_high();
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map(0x00, 0x3f).ram();
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map(0x0000, 0x003f).noprw(); // internal registers
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map(0x0068, 0x0069).rw("i2cbc", FUNC(pcf8584_device::read), FUNC(pcf8584_device::write));
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map(0x0074, 0x0074).r(FUNC(atronic_state::serial_r));
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map(0x0078, 0x007b).rw("scc", FUNC(scc85c30_device::ab_dc_r), FUNC(scc85c30_device::ab_dc_w));
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map(0x0270, 0x0270).w(FUNC(atronic_state::serial_w));
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}
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@ -440,6 +469,12 @@ void atronic_state::atronic(machine_config &config)
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m_maincpu->set_addrmap(AS_IO, &atronic_state::atronic_portmap);
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m_maincpu->set_vblank_int("screen", FUNC(atronic_state::irq0_line_hold));
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DS1386_32K(config, "timekpr", 32768);
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PCF8584(config, "i2cbc", 3000000);
|
||||
|
||||
SCC85C30(config, "scc", 5000000);
|
||||
|
||||
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
|
||||
m_screen->set_raw(VIDEO_CLOCK/2, 640, 0, 512, 257, 0, 224); // ??
|
||||
m_screen->set_screen_update("tms", FUNC(tms34020_device::tms340x0_rgb32));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user