mirror of
https://github.com/holub/mame
synced 2025-06-06 21:03:47 +03:00
-am2901b: Added a skeleton device for the AMD Am2901B 4-bit Bipolar Microprocessor Slice. [Ryan Holtz]
This commit is contained in:
Ryan Holtz
parent
0336a4c86b
commit
e9ea36bf28
@ -94,6 +94,18 @@ if (MACHINES["AKIKO"]~=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/am2901b.h,MACHINES["AM2901B"] = true
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---------------------------------------------------
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if (MACHINES["AM2901B"]~=null) then
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files {
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MAME_DIR .. "src/devices/machine/am2901b.cpp",
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MAME_DIR .. "src/devices/machine/am2901b.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/arm_iomd.h,MACHINES["ARM_IOMD"] = true
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@ -383,6 +383,7 @@ VIDEOS["VRENDER0"] = true
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MACHINES["ACORN_VIDC"] = true
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MACHINES["AKIKO"] = true
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--MACHINES["AM2901B"] = true
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MACHINES["ARM_IOMD"] = true
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MACHINES["AUTOCONFIG"] = true
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MACHINES["BUSMOUSE"] = true
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@ -420,6 +420,7 @@ VIDEOS["BT431"] = true
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--------------------------------------------------
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MACHINES["AKIKO"] = true
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MACHINES["AM2901B"] = true
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MACHINES["AUTOCONFIG"] = true
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MACHINES["BUSMOUSE"] = true
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MACHINES["CR511B"] = true
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228
src/devices/machine/am2901b.cpp
Normal file
228
src/devices/machine/am2901b.cpp
Normal file
@ -0,0 +1,228 @@
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// license:BSD-3-Clause
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// copyright-holders:Ryan Holtz
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/***************************************************************************
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am2901b.cpp
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AMD Am2901B / Am2901C
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Four-Bit Bipolar Microprocessor Slice
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To Do:
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- Opcode hookup
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- Verification
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***************************************************************************/
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#include "emu.h"
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#include "am2901b.h"
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#define VERBOSE (1)
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#include "logmacro.h"
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/*****************************************************************************/
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DEFINE_DEVICE_TYPE(AM2901B, am2901b_device, "am2901b", "AMD Am2901B Bitslice Processor")
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//-------------------------------------------------
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// am2901b_device - constructor
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//-------------------------------------------------
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am2901b_device::am2901b_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, AM2901B, tag, owner, clock)
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, m_d(0)
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, m_q(0)
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, m_i(0)
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, m_a_addr(0)
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, m_b_addr(0)
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, m_a_latch(0)
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, m_b_latch(0)
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, m_q0_in(false)
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, m_q3_in(false)
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, m_ram0_in(false)
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, m_ram3_in(false)
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, m_ci(false)
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, m_cp(false)
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, m_y_out(0)
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, m_g_out(true)
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, m_p_out(true)
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, m_ovr_out(false)
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, m_f0_out(true)
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, m_f3_out(false)
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, m_co_out(false)
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, m_y(*this)
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, m_g(*this)
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, m_p(*this)
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, m_q0(*this)
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, m_q3(*this)
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, m_ram0(*this)
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, m_ram3(*this)
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, m_ovr(*this)
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, m_f0(*this)
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, m_f3(*this)
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, m_co(*this)
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{
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}
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void am2901b_device::device_start()
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{
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save_item(NAME(m_a));
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save_item(NAME(m_d));
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save_item(NAME(m_q));
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save_item(NAME(m_i));
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save_item(NAME(m_a_addr));
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save_item(NAME(m_b_addr));
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save_item(NAME(m_a_latch));
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save_item(NAME(m_b_latch));
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save_item(NAME(m_q0_in));
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save_item(NAME(m_q3_in));
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save_item(NAME(m_ram0_in));
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save_item(NAME(m_ram3_in));
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save_item(NAME(m_ci));
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save_item(NAME(m_cp));
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save_item(NAME(m_y_out));
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save_item(NAME(m_g_out));
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save_item(NAME(m_p_out));
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save_item(NAME(m_q0_out));
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save_item(NAME(m_q3_out));
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save_item(NAME(m_ram0_out));
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save_item(NAME(m_ram3_out));
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save_item(NAME(m_ovr_out));
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save_item(NAME(m_f0_out));
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save_item(NAME(m_f3_out));
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save_item(NAME(m_co_out));
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m_y.resolve_safe();
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m_g.resolve_safe();
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m_p.resolve_safe();
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m_q0.resolve_safe();
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m_q3.resolve_safe();
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m_ram0.resolve_safe();
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m_ram3.resolve_safe();
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m_ovr.resolve_safe();
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m_f0.resolve_safe();
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m_f3.resolve_safe();
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m_co.resolve_safe();
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}
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void am2901b_device::device_reset()
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{
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memset(m_a, 0, sizeof(uint8_t) * 16);
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m_d = 0;
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m_q = 0;
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m_i = 0;
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m_a_addr = 0;
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m_b_addr = 0;
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m_a_latch = 0;
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m_b_latch = 0;
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m_q0_in = false;
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m_q3_in = false;
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m_ram0_in = false;
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m_ram3_in = false;
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m_ci = false;
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m_cp = false;
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m_y_out = 0;
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m_g_out = true;
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m_p_out = true;
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m_q0_out = false;
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m_q3_out = false;
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m_ram0_out = false;
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m_ram3_out = false;
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m_ovr_out = false;
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m_f0_out = true;
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m_f3_out = false;
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m_co_out = false;
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}
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void am2901b_device::a_w(uint8_t data)
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{
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m_a_addr = data;
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}
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void am2901b_device::b_w(uint8_t data)
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{
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m_b_addr = data;
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}
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void am2901b_device::d_w(uint8_t data)
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{
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m_d = data;
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}
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void am2901b_device::i_w(uint16_t data)
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{
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m_i = data;
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}
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WRITE_LINE_MEMBER(am2901b_device::q0_w)
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{
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m_q0_in = (bool)state;
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}
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WRITE_LINE_MEMBER(am2901b_device::q3_w)
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{
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m_q3_in = (bool)state;
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}
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WRITE_LINE_MEMBER(am2901b_device::ram0_w)
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{
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m_ram0_in = (bool)state;
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}
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WRITE_LINE_MEMBER(am2901b_device::ram3_w)
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{
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m_ram3_in = (bool)state;
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}
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WRITE_LINE_MEMBER(am2901b_device::ci_w)
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{
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m_ci = (bool)state;
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}
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WRITE_LINE_MEMBER(am2901b_device::cp_w)
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{
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bool old = m_cp;
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m_cp = (bool)state;
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if (!old && m_cp)
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{
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m_a_latch = m_a[m_a_addr];
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m_b_latch = m_a[m_b_addr];
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execute();
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}
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}
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void am2901b_device::execute()
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{
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disassemble();
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}
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void am2901b_device::disassemble()
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{
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static const char s_r_table[8] = { 'A', 'A', '0', '0', '0', 'D', 'D', 'D' };
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static const char s_s_table[8] = { 'Q', 'B', 'Q', 'B', 'A', 'A', 'Q', '0' };
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static const char *const s_func_table[8] =
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{
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"ADD", "SUBR", "SUBS", "OR", "AND", "NOTRS", "EXOR", "EXNOR"
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};
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static const char *const s_dst_table[8] =
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{
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"QREG", "NOP", "RAMA", "RAMF", "RAMQD", "RAMD", "RAMQU", "RAMU"
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};
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char dasm_buf[64];
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int buf_idx = snprintf(dasm_buf, ARRAY_LENGTH(dasm_buf), "%s %s", s_func_table[(m_i >> 3) & 7], s_dst_table[(m_i >> 6) & 7]);
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while (buf_idx < 12)
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{
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dasm_buf[buf_idx] = ' ';
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buf_idx++;
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}
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snprintf(dasm_buf + buf_idx, ARRAY_LENGTH(dasm_buf) - 12, "%c,%c", s_r_table[m_i & 7], s_s_table[m_i & 7]);
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LOG("%s: %s\n", machine().describe_context(), dasm_buf);
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}
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105
src/devices/machine/am2901b.h
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105
src/devices/machine/am2901b.h
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@ -0,0 +1,105 @@
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// license:BSD-3-Clause
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// copyright-holders:Ryan Holtz
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/***************************************************************************
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am2901b.h
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AMD Am2901B / Am2901C
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Four-Bit Bipolar Microprocessor Slice
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***************************************************************************/
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#ifndef MAME_MACHINE_AM2901B_H
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#define MAME_MACHINE_AM2901B_H
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#pragma once
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> am2901b_device
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class am2901b_device : public device_t
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{
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public:
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// construction/destruction
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am2901b_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
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auto y() { return m_y.bind(); }
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auto g() { return m_g.bind(); }
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auto p() { return m_p.bind(); }
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auto q0() { return m_q0.bind(); }
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auto q3() { return m_q3.bind(); }
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auto ram0() { return m_ram0.bind(); }
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auto ram3() { return m_ram3.bind(); }
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auto ovr() { return m_ovr.bind(); }
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auto f0() { return m_f0.bind(); }
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auto f3() { return m_f3.bind(); }
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void a_w(uint8_t data);
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void b_w(uint8_t data);
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void d_w(uint8_t data);
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void i_w(uint16_t data);
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DECLARE_WRITE_LINE_MEMBER(q0_w);
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DECLARE_WRITE_LINE_MEMBER(q3_w);
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DECLARE_WRITE_LINE_MEMBER(ram0_w);
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DECLARE_WRITE_LINE_MEMBER(ram3_w);
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DECLARE_WRITE_LINE_MEMBER(ci_w);
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DECLARE_WRITE_LINE_MEMBER(cp_w);
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private:
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// device-level overrides
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virtual void device_start() override;
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virtual void device_reset() override;
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void execute();
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void disassemble();
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uint8_t m_a[16];
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uint8_t m_d;
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uint8_t m_q;
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uint16_t m_i;
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uint8_t m_a_addr;
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uint8_t m_b_addr;
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uint8_t m_a_latch;
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uint8_t m_b_latch;
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bool m_q0_in;
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bool m_q3_in;
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bool m_ram0_in;
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bool m_ram3_in;
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bool m_ci;
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bool m_cp;
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uint8_t m_y_out;
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bool m_g_out;
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bool m_p_out;
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bool m_q0_out;
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bool m_q3_out;
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bool m_ram0_out;
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bool m_ram3_out;
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bool m_ovr_out;
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bool m_f0_out;
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bool m_f3_out;
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bool m_co_out;
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devcb_write8 m_y;
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devcb_write_line m_g;
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devcb_write_line m_p;
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devcb_write_line m_q0;
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devcb_write_line m_q3;
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devcb_write_line m_ram0;
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devcb_write_line m_ram3;
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devcb_write_line m_ovr;
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devcb_write_line m_f0;
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devcb_write_line m_f3;
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devcb_write_line m_co;
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};
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// device type definition
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DECLARE_DEVICE_TYPE(AM2901B, am2901b_device)
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#endif // MAME_MACHINE_AM2901B_H
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@ -15,6 +15,7 @@
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#include "imagedev/floppy.h"
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#include "machine/6850acia.h"
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#include "machine/am25s55x.h"
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#include "machine/am2901b.h"
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#include "machine/am2910.h"
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#include "machine/com8116.h"
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#include "machine/fdc_pll.h"
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@ -76,6 +77,10 @@ public:
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, m_filter_multprom(*this, "filter_multprom")
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, m_filter_signal(nullptr)
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, m_filter_mult(nullptr)
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, m_size_yl(*this, "filter_de")
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, m_size_yh(*this, "filter_df")
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, m_size_xl(*this, "filter_dg")
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, m_size_xh(*this, "filter_dh")
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{
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}
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@ -300,6 +305,11 @@ private:
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uint8_t m_filter_abbb[16];
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// Size Card
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required_device<am2901b_device> m_size_yl;
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required_device<am2901b_device> m_size_yh;
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required_device<am2901b_device> m_size_xl;
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required_device<am2901b_device> m_size_xh;
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uint8_t m_size_h;
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uint8_t m_size_v;
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@ -1825,6 +1835,12 @@ void dpb7000_state::dpb7000(machine_config &config)
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m_fdd_serial->rxd_handler().set(FUNC(dpb7000_state::fddcpu_debug_rx));
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config.set_perfect_quantum(m_fddcpu);
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// Size Card
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AM2901B(config, m_size_yl);
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AM2901B(config, m_size_yh);
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AM2901B(config, m_size_xl);
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AM2901B(config, m_size_xh);
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}
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