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https://github.com/holub/mame
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apple2: Support for the Stellation Q-68 and Q-68 Plus 68008 coprocessor cards. [Rob Justice, R. Belmont]
This commit is contained in:
arbee
parent
a263bf5bc4
commit
7e5ea52797
@ -2489,6 +2489,8 @@ if (BUSES["A2BUS"]~=null) then
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MAME_DIR .. "src/devices/bus/a2bus/nippelclock.h",
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MAME_DIR .. "src/devices/bus/a2bus/pc_xporter.cpp",
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MAME_DIR .. "src/devices/bus/a2bus/pc_xporter.h",
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MAME_DIR .. "src/devices/bus/a2bus/q68.cpp",
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MAME_DIR .. "src/devices/bus/a2bus/q68.h",
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MAME_DIR .. "src/devices/bus/a2bus/ramcard128k.cpp",
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MAME_DIR .. "src/devices/bus/a2bus/ramcard128k.h",
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MAME_DIR .. "src/devices/bus/a2bus/ramcard16k.cpp",
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244
src/devices/bus/a2bus/q68.cpp
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244
src/devices/bus/a2bus/q68.cpp
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@ -0,0 +1,244 @@
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// license:BSD-3-Clause
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// copyright-holders:Rob Justice, R. Belmont
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/*********************************************************************
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q68.cpp
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Implementation of the Stellation Q-68 68008 card
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Memory Map
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68008 0x00000-0x0ffff -> Apple II memory
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68008 0x10000-0x17fff -> Onboard EPROM, 8k (expandable to 32k)
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68008 0x18000-0x1ffff -> Onboard RAM, 8K (expandable to 32k?)
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68008 0x20000-0xfffff -> Open, for options via expansion connector
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Apple II Memory
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68008 0x00000-0x003ff -> 6502 0x0800-0x0bff
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68008 0x00400-0x007ff -> 6502 0x0400-0x07ff
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68008 0x00800-0x00bff -> 6502 0x0000-0x03ff
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68008 0x00c00-0x0ffff -> 6502 0x0c00-0xffff
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0xc0n1 - Turn card on
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0xc0n3 - Interrupt card
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0xc0n0 - Turn card off
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Also includes the Q-68 plus version made by nanja.info
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This has a full 1MB of ram on board and slight update to the memory map
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Memory Map
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68008 0x00000-0x0ffff -> Apple II memory
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68008 0x10000-0x11fff -> Onboard EPROM, 8k
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68008 0x12000-0x1ffff -> Onboard RAM, ~1MB
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Todo:
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Implement Watchdog timer. Only relevant to Q-68 and bus errors for non existant memory access
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Speed of 6502 should be slower when 68008 is enabled and accessing AppleII memory space
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Speed of 68008 should be slower when access the Apple II memory space
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(reference: http://mirrors.apple2.org.za/ftp.apple.asimov.net/unsorted/QPAK-68%20Users%20Guide.pdf )
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*********************************************************************/
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#include "q68.h"
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#include "cpu/m68000/m68000.h"
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/***************************************************************************
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PARAMETERS
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***************************************************************************/
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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DEFINE_DEVICE_TYPE(A2BUS_Q68, a2bus_q68_device, "q68", "Stellation Two Q-68")
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DEFINE_DEVICE_TYPE(A2BUS_Q68PLUS, a2bus_q68plus_device, "q68plus", "Stellation Two Q-68 Plus")
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void a2bus_q68_device::m68008_mem(address_map &map)
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{
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map(0x00000, 0x0ffff).rw(FUNC(a2bus_68k_device::dma_r), FUNC(a2bus_68k_device::dma_w));
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map(0x10000, 0x11fff).mirror(0x6000).rom(); //8k debug rom
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map(0x18000, 0x19fff).mirror(0x6000).ram(); //8k ram
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}
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void a2bus_q68plus_device::m68008_mem(address_map &map)
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{
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map(0x00000, 0x0ffff).rw(FUNC(a2bus_68k_device::dma_r), FUNC(a2bus_68k_device::dma_w));
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map(0x10000, 0x11fff).rom(); // 8k debug rom
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map(0x12000, 0xfffff).ram(); // 1 MB of RAM
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}
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ROM_START( q68 )
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ROM_REGION(0x100000, "m68008", 0)
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ROM_LOAD( "debug1.04-caf4.bin", 0x10000, 0x02000, CRC(6bead126) SHA1(e46d5e8256faece3723e9040f78fd1c8edb3ee0e) )
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ROM_END
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/***************************************************************************
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FUNCTION PROTOTYPES
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***************************************************************************/
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void a2bus_q68_device::device_add_mconfig(machine_config &config)
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{
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M68008(config, m_m68008, 1021800*7); // M68008 runs at 7.16 MHz
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m_m68008->set_addrmap(AS_PROGRAM, &a2bus_q68_device::m68008_mem);
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}
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void a2bus_q68plus_device::device_add_mconfig(machine_config &config)
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{
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M68008(config, m_m68008, 1021800*7); // M68008 runs at 7.16 MHz
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m_m68008->set_addrmap(AS_PROGRAM, &a2bus_q68plus_device::m68008_mem);
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}
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//-------------------------------------------------
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// device_rom_region - device-specific ROMs
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//-------------------------------------------------
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const tiny_rom_entry *a2bus_68k_device::device_rom_region() const
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{
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return ROM_NAME( q68 );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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a2bus_68k_device::a2bus_68k_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
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: device_t(mconfig, type, tag, owner, clock)
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, device_a2bus_card_interface(mconfig, *this)
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, m_m68008(*this, "m68008")
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, m_bEnabled(false)
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{
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}
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a2bus_q68_device::a2bus_q68_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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a2bus_68k_device(mconfig, A2BUS_Q68, tag, owner, clock)
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{
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}
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a2bus_q68plus_device::a2bus_q68plus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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a2bus_68k_device(mconfig, A2BUS_Q68PLUS, tag, owner, clock)
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{
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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 a2bus_68k_device::device_start()
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{
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save_item(NAME(m_bEnabled));
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}
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void a2bus_68k_device::device_reset()
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{
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m_m68008->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
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m_m68008->set_input_line(INPUT_LINE_HALT, ASSERT_LINE);
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m_bEnabled=false;
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}
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uint8_t a2bus_68k_device::read_c0nx(uint8_t offset)
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{
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switch (offset & 0x3)
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{
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case 0:
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case 2:
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m_m68008->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
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m_m68008->set_input_line(INPUT_LINE_HALT, ASSERT_LINE);
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m_bEnabled=false;
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break;
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case 1:
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m_m68008->set_input_line(INPUT_LINE_RESET, CLEAR_LINE);
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m_m68008->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
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m_bEnabled=true;
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break;
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case 3:
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m_m68008->set_input_line(INPUT_LINE_RESET, CLEAR_LINE);
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m_m68008->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
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m_bEnabled=true;
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m_m68008->pulse_input_line(M68K_IRQ_7, attotime::zero); //work around, processor status lines + logic should clear nmi.
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break;
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}
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return 0;
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}
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void a2bus_68k_device::write_c0nx(uint8_t offset, uint8_t data)
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{
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switch (offset & 0x3)
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{
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case 0:
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case 2:
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m_m68008->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
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m_m68008->set_input_line(INPUT_LINE_HALT, ASSERT_LINE);
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m_bEnabled=false;
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break;
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case 1:
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m_m68008->set_input_line(INPUT_LINE_RESET, CLEAR_LINE);
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m_m68008->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
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m_bEnabled=true;
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break;
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case 3:
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m_m68008->set_input_line(INPUT_LINE_RESET, CLEAR_LINE);
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m_m68008->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
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m_bEnabled=true;
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m_m68008->pulse_input_line(M68K_IRQ_7, attotime::zero); //work around, processor status lines should clear nmi.
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break;
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}
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}
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uint8_t a2bus_68k_device::dma_r(offs_t offset)
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{
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if(m_bEnabled)
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{
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if (offset <= 0x03ff) //0x0000-0x03ff
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{
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return slot_dma_read(offset+0x800);
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}
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else if (offset <= 0x07ff) //0x0400-0x07ff
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{
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return slot_dma_read(offset);
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}
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else if (offset <= 0x0bff) //0x0800-0x0bff
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{
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return slot_dma_read(offset-0x800);
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}
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else if (offset <= 0xffff) //0x0c00-0xffff
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{
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return slot_dma_read(offset);
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}
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}
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return 0xff;
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}
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//-------------------------------------------------
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// dma_w -
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//-------------------------------------------------
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void a2bus_68k_device::dma_w(offs_t offset, uint8_t data)
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{
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if(m_bEnabled)
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{
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if (offset <= 0x03ff) //0x0000-0x03ff
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{
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return slot_dma_write(offset+0x800, data);
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}
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else if (offset <= 0x07ff) //0x0400-0x07ff
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{
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return slot_dma_write(offset, data);
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}
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else if (offset <= 0x0bff) //0x0800-0x0bff
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{
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return slot_dma_write(offset-0x800, data);
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}
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else if (offset <= 0xffff) //0x0c00-0xffff
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{
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return slot_dma_write(offset, data);
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}
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}
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}
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77
src/devices/bus/a2bus/q68.h
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77
src/devices/bus/a2bus/q68.h
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@ -0,0 +1,77 @@
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// license:BSD-3-Clause
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// copyright-holders:Rob Justice, R. Belmont
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/*********************************************************************
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q68.h
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Implementation of the Stellation Q-68 68008 card
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*********************************************************************/
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#ifndef MAME_BUS_A2BUS_Q68_H
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#define MAME_BUS_A2BUS_Q68_H
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#pragma once
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#include "a2bus.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class a2bus_68k_device:
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public device_t,
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public device_a2bus_card_interface
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{
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friend class a2bus_q68_device;
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friend class a2bus_q68plus_device;
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protected:
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a2bus_68k_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
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virtual void device_start() override;
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virtual void device_reset() override;
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virtual const tiny_rom_entry *device_rom_region() const override;
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// overrides of standard a2bus slot functions
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virtual uint8_t read_c0nx(uint8_t offset) override;
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virtual void write_c0nx(uint8_t offset, uint8_t data) override;
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virtual bool take_c800() override { return false; }
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required_device<cpu_device> m_m68008;
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uint8_t dma_r(offs_t offset);
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void dma_w(offs_t offset, uint8_t data);
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private:
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bool m_bEnabled;
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};
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class a2bus_q68_device : public a2bus_68k_device
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{
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public:
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a2bus_q68_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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virtual void device_add_mconfig(machine_config &config) override;
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//virtual const tiny_rom_entry *device_rom_region() const override;
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void m68008_mem(address_map &map);
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};
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class a2bus_q68plus_device : public a2bus_68k_device
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{
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public:
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a2bus_q68plus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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virtual void device_add_mconfig(machine_config &config) override;
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//virtual const tiny_rom_entry *device_rom_region() const override;
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void m68008_mem(address_map &map);
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};
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// device type definition
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DECLARE_DEVICE_TYPE(A2BUS_Q68, a2bus_q68_device)
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DECLARE_DEVICE_TYPE(A2BUS_Q68PLUS, a2bus_q68plus_device)
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#endif // MAME_BUS_A2BUS_Q68_H
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@ -97,6 +97,7 @@ II Plus: RAM options reduced to 16/32/48 KB.
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#include "bus/a2bus/transwarp.h"
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#include "bus/a2bus/uniprint.h"
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#include "bus/a2bus/booti.h"
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#include "bus/a2bus/q68.h"
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#include "bus/a2gameio/gameio.h"
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@ -1345,6 +1346,8 @@ static void apple2_cards(device_slot_interface &device)
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device.option_add("uniprint", A2BUS_UNIPRINT); /* Videx Uniprint parallel printer card */
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device.option_add("ccs7710", A2BUS_CCS7710); /* California Computer Systems Model 7710 Asynchronous Serial Interface */
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device.option_add("booti", A2BUS_BOOTI); /* Booti Card */
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device.option_add("q68", A2BUS_Q68); /* Stellation Q68 68000 card */
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device.option_add("q68plus", A2BUS_Q68PLUS); /* Stellation Q68 Plus 68000 card */
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}
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void apple2_state::apple2_common(machine_config &config)
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@ -179,6 +179,7 @@ MIG RAM page 2 $CE02 is the speaker/slot bitfield and $CE03 is the paddle/accele
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#include "bus/a2bus/laser128.h"
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#include "bus/a2bus/mouse.h"
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#include "bus/a2bus/pc_xporter.h"
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#include "bus/a2bus/q68.h"
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#include "bus/a2bus/sider.h"
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#include "bus/a2bus/ssbapple.h"
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#include "bus/a2bus/ssprite.h"
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@ -4702,6 +4703,8 @@ static void apple2_cards(device_slot_interface &device)
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device.option_add("ccs7710", A2BUS_CCS7710); /* California Computer Systems Model 7710 Asynchronous Serial Interface */
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device.option_add("booti", A2BUS_BOOTI); /* Booti Card */
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device.option_add("lancegs", A2BUS_LANCEGS); /* ///SHH SYSTEME LANceGS Card */
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device.option_add("q68", A2BUS_Q68); /* Stellation Q68 68000 card */
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device.option_add("q68plus", A2BUS_Q68PLUS); /* Stellation Q68 Plus 68000 card */
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}
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static void apple2eaux_cards(device_slot_interface &device)
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@ -119,6 +119,7 @@
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#include "bus/a2bus/laser128.h"
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#include "bus/a2bus/mouse.h"
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//#include "bus/a2bus/pc_xporter.h"
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#include "bus/a2bus/q68.h"
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#include "bus/a2bus/ramcard16k.h"
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//#include "bus/a2bus/ramfast.h"
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#include "bus/a2bus/sider.h"
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@ -4829,6 +4830,8 @@ static void apple2_cards(device_slot_interface &device)
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device.option_add("ccs7710", A2BUS_CCS7710); /* California Computer Systems Model 7710 Asynchronous Serial Interface */
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device.option_add("booti", A2BUS_BOOTI); /* Booti Card */
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device.option_add("lancegs", A2BUS_LANCEGS); /* ///SHH SYSTEME LANceGS Card */
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device.option_add("q68", A2BUS_Q68); /* Stellation Q68 68000 card */
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device.option_add("q68plus", A2BUS_Q68PLUS); /* Stellation Q68 Plus 68000 card */
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}
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void apple2gs_state::apple2gs(machine_config &config)
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