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https://github.com/holub/mame
synced 2025-04-23 00:39:36 +03:00
[SG1000A] Fixed refresh rate and interrupts, added 8255PPI and coin counter. Fixes bug #02233, please credit Tafoid for that.
This commit is contained in:
Curt Coder
parent
ca5fa888aa
commit
b42e581368
@ -114,6 +114,7 @@ CN4 CN5
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#include "driver.h"
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#include "sound/sn76496.h"
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#include "video/tms9928a.h"
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#include "machine/8255ppi.h"
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#include "machine/segacrpt.h"
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/*************************************
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@ -122,27 +123,18 @@ CN4 CN5
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*
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*************************************/
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static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
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AM_RANGE(0x0000, 0x7FFF) AM_READ(SMH_ROM)
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AM_RANGE(0x8000, 0xbFFF) AM_READ(SMH_ROM)
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AM_RANGE(0xc000, 0xc3ff) AM_READ(SMH_RAM)
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
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AM_RANGE(0x0000, 0x7FFF) AM_WRITE(SMH_ROM)
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AM_RANGE(0x8000, 0xbFFF) AM_WRITE(SMH_ROM)
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AM_RANGE(0xc000, 0xc3ff) AM_WRITE(SMH_RAM)
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static ADDRESS_MAP_START( program_map, ADDRESS_SPACE_PROGRAM, 8 )
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AM_RANGE(0x0000, 0x7fff) AM_ROM // separate region needed for decrypting
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AM_RANGE(0x8000, 0xbfff) AM_ROM
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AM_RANGE(0xc000, 0xc3ff) AM_RAM
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( io_map, ADDRESS_SPACE_IO, 8 )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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AM_RANGE(0x7f, 0x7F) AM_WRITE(sn76496_0_w)
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AM_RANGE(0xBE, 0xBE) AM_READWRITE(TMS9928A_vram_r, TMS9928A_vram_w)
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AM_RANGE(0xBF, 0xBF) AM_READWRITE(TMS9928A_register_r, TMS9928A_register_w)
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AM_RANGE(0xDC, 0xDC) AM_READ_PORT("P1")
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AM_RANGE(0xDD, 0xDD) AM_READ_PORT("P2")
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AM_RANGE(0xDE, 0xDE) AM_READ_PORT("DSW")
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AM_RANGE(0xDF, 0xDF) AM_WRITE(SMH_NOP) //? 8255 ?
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AM_RANGE(0x7f, 0x7f) AM_WRITE(sn76496_0_w)
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AM_RANGE(0xbe, 0xbe) AM_READWRITE(TMS9928A_vram_r, TMS9928A_vram_w)
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AM_RANGE(0xbf, 0xbf) AM_READWRITE(TMS9928A_register_r, TMS9928A_register_w)
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AM_RANGE(0xdc, 0xdf) AM_DEVREADWRITE(PPI8255, "ppi8255", ppi8255_r, ppi8255_w)
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ADDRESS_MAP_END
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/*************************************
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@ -213,7 +205,6 @@ static INPUT_PORTS_START( chwrestl )
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PORT_BIT ( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
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INPUT_PORTS_END
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static INPUT_PORTS_START( chboxing )
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PORT_INCLUDE( sg1000 )
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@ -223,7 +214,6 @@ static INPUT_PORTS_START( chboxing )
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PORT_DIPSETTING( 0x80, DEF_STR( Japanese ) )
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INPUT_PORTS_END
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static INPUT_PORTS_START( dokidoki )
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PORT_INCLUDE( sg1000 )
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@ -233,15 +223,14 @@ static INPUT_PORTS_START( dokidoki )
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PORT_DIPSETTING( 0x00, DEF_STR( On ) )
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INPUT_PORTS_END
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static INTERRUPT_GEN( sg100a_interrupt )
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static INTERRUPT_GEN( sg1000a_interrupt )
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{
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TMS9928A_interrupt(machine);
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}
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static void vdp_interrupt (running_machine *machine, int state)
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static void vdp_interrupt(running_machine *machine, int state)
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{
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cpunum_set_input_line(machine, 0,0, HOLD_LINE);
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cpunum_set_input_line(machine, 0, INPUT_LINE_IRQ0, state);
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}
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static const TMS9928a_interface tms9928a_interface =
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@ -252,6 +241,21 @@ static const TMS9928a_interface tms9928a_interface =
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vdp_interrupt
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};
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static WRITE8_HANDLER( sg1000a_coin_counter_w )
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{
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coin_counter_w(0, data & 0x01);
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}
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static const ppi8255_interface ppi8255_intf =
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{
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input_port_0_r,
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input_port_1_r,
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input_port_2_r,
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NULL,
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NULL,
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sg1000a_coin_counter_w
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};
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/*************************************
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*
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* Machine drivers
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@ -259,21 +263,26 @@ static const TMS9928a_interface tms9928a_interface =
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*************************************/
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static MACHINE_DRIVER_START( sg1000a )
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MDRV_CPU_ADD("main", Z80, 3579545) /* 3.579545 Mhz */
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MDRV_CPU_PROGRAM_MAP(readmem,writemem)
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MDRV_CPU_IO_MAP(io_map,0)
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MDRV_CPU_VBLANK_INT("main", sg100a_interrupt)
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/* basic machine hardware */
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MDRV_CPU_ADD("main", Z80, XTAL_3_579545MHz)
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MDRV_CPU_PROGRAM_MAP(program_map, 0)
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MDRV_CPU_IO_MAP(io_map, 0)
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MDRV_CPU_VBLANK_INT("main", sg1000a_interrupt)
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MDRV_DEVICE_ADD( "ppi8255", PPI8255 )
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MDRV_DEVICE_CONFIG( ppi8255_intf )
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/* video hardware */
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MDRV_IMPORT_FROM(tms9928a)
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MDRV_SCREEN_MODIFY("main")
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MDRV_SCREEN_REFRESH_RATE(60)
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MDRV_SCREEN_REFRESH_RATE((float)XTAL_10_738635MHz/2/342/262)
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
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/* sound hardware */
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MDRV_SPEAKER_STANDARD_MONO("mono")
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MDRV_SOUND_ADD("sn", SN76489, 3579545)
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MDRV_SOUND_ADD("sn", SN76489, XTAL_3_579545MHz)
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MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
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MACHINE_DRIVER_END
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@ -327,9 +336,6 @@ static DRIVER_INIT(chwrestl)
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*
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*************************************/
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GAME( 1984, chboxing, 0, sg1000a, chboxing, sg1000a, ROT0, "Sega", "Champion Boxing", 0)
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GAME( 1985, chwrestl, 0, sg1000a, chwrestl, chwrestl, ROT0, "Sega", "Champion Pro Wrestling", 0)
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GAME( 1985, dokidoki, 0, sg1000a, dokidoki, sg1000a, ROT0, "Sega", "Doki Doki Penguin Land", 0)
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GAME( 1984, chboxing, 0, sg1000a, chboxing, sg1000a, ROT0, "Sega", "Champion Boxing", 0 )
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GAME( 1985, chwrestl, 0, sg1000a, chwrestl, chwrestl, ROT0, "Sega", "Champion Pro Wrestling", 0 )
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GAME( 1985, dokidoki, 0, sg1000a, dokidoki, sg1000a, ROT0, "Sega", "Doki Doki Penguin Land", 0 )
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