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https://github.com/holub/mame
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(MESS) indiana: preliminary hookup of ISA bus and peripherals and MFP. [R. Belmont]
nw: As noted, it puts lots of text in the VGA framebuffer which is never displayed. Something off-spec with how the VGA is being accessed?
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R. Belmont
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418dca490b
commit
932a7cc8d2
@ -2,9 +2,11 @@
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Indiana University 68030 board
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08/12/2009 Skeleton driver.
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If 6001F7 is held at 40, then '>' will appear on screen.
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08/12/2009 Skeleton driver.
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01/20/2014 Added ISA bus and peripherals
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TODO: Text appears in VGA f/b (0x6B8000), but doesn't display?
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System often reads/writes 6003D4/5, might be a cut-down 6845,
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as it only uses registers C,D,E,F.
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@ -12,15 +14,21 @@
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#include "emu.h"
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#include "cpu/m68000/m68000.h"
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#include "video/pc_vga.h"
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#include "machine/isa.h"
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#include "machine/isa_cards.h"
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#include "machine/mc68901.h"
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#include "machine/keyboard.h"
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#define M68K_TAG "maincpu"
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#define ISABUS_TAG "isa"
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#define MFP_TAG "mfp"
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class indiana_state : public driver_device
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{
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public:
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indiana_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag) ,
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m_maincpu(*this, "maincpu") { }
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m_maincpu(*this, M68K_TAG) { }
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DECLARE_DRIVER_INIT(indiana);
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virtual void machine_reset();
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required_device<cpu_device> m_maincpu;
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@ -29,18 +37,15 @@ public:
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static ADDRESS_MAP_START(indiana_mem, AS_PROGRAM, 32, indiana_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x00000000, 0x0000ffff) AM_MIRROR(0x7f800000) AM_ROM AM_REGION("user1",0) // 64Kb of EPROM
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AM_RANGE(0x00000000, 0x0000ffff) AM_MIRROR(0x7f800000) AM_ROM AM_REGION("user1", 0) // 64Kb of EPROM
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AM_RANGE(0x00100000, 0x00107fff) AM_MIRROR(0x7f8f8000) AM_RAM // SRAM 32Kb of SRAM
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AM_RANGE(0x00200000, 0x002fffff) AM_MIRROR(0x7f800000) AM_RAM // MFP
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AM_RANGE(0x00400000, 0x004fffff) AM_MIRROR(0x7f800000) AM_RAM // 16 bit PC IO
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AM_RANGE(0x00500000, 0x005fffff) AM_MIRROR(0x7f800000) AM_RAM // 16 bit PC MEM
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AM_RANGE(0x00600000, 0x006fffff) AM_MIRROR(0x7f800000) AM_RAM // 8 bit PC IO
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AM_RANGE(0x00700000, 0x007fffff) AM_MIRROR(0x7f800000) AM_RAM // 8 bit PC MEM
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AM_RANGE(0x7f6003b0, 0x7f6003bf) AM_DEVREADWRITE8("vga", vga_device, port_03b0_r, port_03b0_w, 0xffffffff)
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AM_RANGE(0x7f6003c0, 0x7f6003cf) AM_DEVREADWRITE8("vga", vga_device, port_03c0_r, port_03c0_w, 0xffffffff)
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AM_RANGE(0x7f6003d0, 0x7f6003df) AM_DEVREADWRITE8("vga", vga_device, port_03d0_r, port_03d0_w, 0xffffffff)
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AM_RANGE(0x7f7a0000, 0x7f7bffff) AM_DEVREADWRITE8("vga", vga_device, mem_r, mem_w, 0xffffffff)
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AM_RANGE(0x80000000, 0x803fffff) AM_MIRROR(0x7fc00000) AM_RAM // 4 MB RAM
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AM_RANGE(0x00200000, 0x002fffff) AM_DEVREADWRITE8(MFP_TAG, mc68901_device, read, write, 0xffffffff) AM_MIRROR(0x7f800000) // MFP
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AM_RANGE(0x00400000, 0x004fffff) AM_DEVREADWRITE16(ISABUS_TAG, isa16_device, io16_r, io16_w, 0xffffffff) AM_MIRROR(0x7f800000) // 16 bit PC IO
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AM_RANGE(0x00500000, 0x005fffff) AM_DEVREADWRITE16(ISABUS_TAG, isa16_device, prog16_r, prog16_w, 0xffffffff) AM_MIRROR(0x7f800000) // 16 bit PC MEM
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AM_RANGE(0x00600000, 0x006fffff) AM_DEVREADWRITE8(ISABUS_TAG, isa16_device, io_r, io_w, 0xffffffff) AM_MIRROR(0x7f800000) // 8 bit PC IO
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AM_RANGE(0x00700000, 0x007fffff) AM_DEVREADWRITE8(ISABUS_TAG, isa16_device, prog_r, prog_w, 0xffffffff) AM_MIRROR(0x7f800000) // 8 bit PC MEM
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AM_RANGE(0x80000000, 0x803fffff) AM_RAM // 4 MB RAM
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AM_RANGE(0xfffe0000, 0xfffe7fff) AM_RAM // SRAM mirror?
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ADDRESS_MAP_END
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@ -53,39 +58,83 @@ void indiana_state::machine_reset()
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{
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}
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/* F4 Character Displayer */
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static const gfx_layout indiana_charlayout =
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{
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8, 16, /* 8 x 16 characters */
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128, /* 128 characters */
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1, /* 1 bits per pixel */
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{ 0 }, /* no bitplanes */
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/* x offsets */
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{ 0, 1, 2, 3, 4, 5, 6, 7 },
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/* y offsets */
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{ 3*8, 2*8, 1*8, 0*8, 7*8, 6*8, 5*8, 4*8, 11*8, 10*8, 9*8, 8*8, 15*8, 14*8, 13*8, 12*8 },
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8*16 /* every char takes 16 bytes */
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};
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static GFXDECODE_START( indiana )
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GFXDECODE_ENTRY( "user1", 0x6710, indiana_charlayout, 0, 4 ) // offset is for -bios 0
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GFXDECODE_END
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static MACHINE_CONFIG_START( indiana, indiana_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu",M68030, XTAL_16MHz)
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MCFG_CPU_PROGRAM_MAP(indiana_mem)
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/* video hardware */
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MCFG_GFXDECODE(indiana)
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MCFG_FRAGMENT_ADD( pcvideo_vga )
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MACHINE_CONFIG_END
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DRIVER_INIT_MEMBER(indiana_state,indiana)
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{
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}
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static const isa16bus_interface indiana_isabus_intf =
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{
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// interrupts 2-7
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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// high IRQs 10-15
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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// dma request 0-7
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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DEVCB_NULL,
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};
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SLOT_INTERFACE_START( indiana_isa_cards )
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// 8-bit
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SLOT_INTERFACE("fdc_at", ISA8_FDC_AT)
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SLOT_INTERFACE("comat", ISA8_COM_AT)
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SLOT_INTERFACE("vga", ISA8_VGA)
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// 16-bit
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SLOT_INTERFACE("ide", ISA16_IDE)
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SLOT_INTERFACE_END
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static MC68901_INTERFACE( mfp_interface )
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{
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XTAL_16MHz/4, /* timer clock */
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0, /* receive clock */
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0, /* transmit clock */
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DEVCB_NULL, /* interrupt */
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DEVCB_NULL, /* GPIO write */
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DEVCB_NULL, /* TAO */
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DEVCB_NULL, /* TBO */
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DEVCB_NULL, /* TCO */
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DEVCB_NULL, /* TDO */
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DEVCB_DEVICE_LINE_MEMBER("keyboard", serial_keyboard_device, rx_w), /* serial output */
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DEVCB_NULL,
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DEVCB_NULL
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};
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static struct serial_keyboard_interface keyboard_interface =
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{
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DEVCB_DEVICE_LINE_MEMBER(MFP_TAG, mc68901_device, write_rx)
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};
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static MACHINE_CONFIG_START( indiana, indiana_state )
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/* basic machine hardware */
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MCFG_CPU_ADD(M68K_TAG, M68030, XTAL_16MHz)
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MCFG_CPU_PROGRAM_MAP(indiana_mem)
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MCFG_ISA16_BUS_ADD(ISABUS_TAG, ":"M68K_TAG, indiana_isabus_intf)
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MCFG_ISA16_BUS_CUSTOM_SPACES()
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MCFG_ISA16_SLOT_ADD(ISABUS_TAG, "isa1", indiana_isa_cards, "vga", false)
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MCFG_ISA16_SLOT_ADD(ISABUS_TAG, "isa2", indiana_isa_cards, "fdc_at", false)
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MCFG_ISA16_SLOT_ADD(ISABUS_TAG, "isa3", indiana_isa_cards, "comat", false)
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MCFG_MC68901_ADD(MFP_TAG, XTAL_16MHz/4, mfp_interface)
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MCFG_SERIAL_KEYBOARD_ADD("keyboard", keyboard_interface, 1200)
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MACHINE_CONFIG_END
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/* ROM definition */
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ROM_START( indiana )
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ROM_REGION32_BE( 0x10000, "user1", ROMREGION_ERASEFF )
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