src/mess/drivers/phc25.c
| r0 | r7464 | |
|---|
| 1 | /***************************************************************************
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| 2 | |
| 3 | Sanyo PHC-25
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| 4 | |
| 5 | Skeleton driver.
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| 6 | |
| 7 | ****************************************************************************/
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| 8 | |
| 9 | /*
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| 10 | |
| 11 | http://www.geocities.jp/sanyo_phc_25/
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| 12 | |
| 13 | Z80 @ 4 MHz
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| 14 | MC6847 video
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| 15 | 3x 8KB bios ROM
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| 16 | 1x 4KB chargen ROM
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| 17 | 16KB RAM
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| 18 | 6KB video RAM
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| 19 | |
| 20 | */
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| 21 | |
| 22 | #include "emu.h"
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| 23 | #include "cpu/z80/z80.h"
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| 24 | #include "devices/messram.h"
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| 25 | #include "video/m6847.h"
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| 26 | #include "sound/ay8910.h"
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| 27 | |
| 28 | |
| 29 | static ADDRESS_MAP_START(phc25_mem, ADDRESS_SPACE_PROGRAM, 8)
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| 30 | ADDRESS_MAP_UNMAP_HIGH
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| 31 | AM_RANGE(0x0000, 0x5fff) AM_ROM
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| 32 | AM_RANGE(0x8000, 0xbfff) AM_RAM
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| 33 | AM_RANGE(0xe800, 0xffff) AM_RAM // video RAM
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| 34 | ADDRESS_MAP_END
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| 35 | |
| 36 | static ADDRESS_MAP_START(phc25_io, ADDRESS_SPACE_IO, 8)
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| 37 | ADDRESS_MAP_UNMAP_HIGH
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| 38 | ADDRESS_MAP_GLOBAL_MASK(0x80)
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| 39 | // AM_RANGE(0x40, 0x40) 6847
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| 40 | // AM_RANGE(0x80, 0x88) keyboard
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| 41 | // AM_RANGE(0xc0, 0xc1) PSG
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| 42 | ADDRESS_MAP_END
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| 43 | |
| 44 | /* Input ports */
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| 45 | INPUT_PORTS_START( phc25 )
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| 46 | INPUT_PORTS_END
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| 47 | |
| 48 | |
| 49 | static MACHINE_RESET(phc25)
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| 50 | {
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| 51 | }
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| 52 | |
| 53 | static VIDEO_START( phc25 )
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| 54 | {
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| 55 | }
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| 56 | |
| 57 | static VIDEO_UPDATE( phc25 )
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| 58 | {
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| 59 | return 0;
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| 60 | }
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| 61 | |
| 62 | static const mc6847_interface mc6847_intf =
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| 63 | {
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| 64 | DEVCB_NULL,
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| 65 | DEVCB_NULL,
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| 66 | DEVCB_NULL,
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| 67 | DEVCB_NULL,
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| 68 | DEVCB_NULL,
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| 69 | DEVCB_NULL,
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| 70 | DEVCB_NULL,
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| 71 | DEVCB_NULL,
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| 72 | DEVCB_NULL,
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| 73 | DEVCB_NULL,
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| 74 | DEVCB_NULL,
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| 75 | DEVCB_NULL
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| 76 | };
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| 77 | |
| 78 | static const ay8910_interface ay8910_intf =
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| 79 | {
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| 80 | AY8910_LEGACY_OUTPUT,
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| 81 | AY8910_DEFAULT_LOADS,
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| 82 | DEVCB_NULL,
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| 83 | DEVCB_NULL,
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| 84 | DEVCB_NULL,
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| 85 | DEVCB_NULL
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| 86 | };
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| 87 | |
| 88 | static MACHINE_DRIVER_START( phc25 )
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| 89 | /* basic machine hardware */
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| 90 | MDRV_CPU_ADD("maincpu", Z80, XTAL_4MHz)
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| 91 | MDRV_CPU_PROGRAM_MAP(phc25_mem)
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| 92 | MDRV_CPU_IO_MAP(phc25_io)
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| 93 | |
| 94 | MDRV_MACHINE_RESET(phc25)
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| 95 | |
| 96 | /* video hardware */
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| 97 | MDRV_SCREEN_ADD("screen", RASTER)
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| 98 | MDRV_SCREEN_REFRESH_RATE(50)
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| 99 | MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
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| 100 | MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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| 101 | MDRV_SCREEN_SIZE(640, 480)
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| 102 | MDRV_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
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| 103 | MDRV_PALETTE_LENGTH(2)
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| 104 | MDRV_PALETTE_INIT(black_and_white)
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| 105 | |
| 106 | MDRV_VIDEO_START(phc25)
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| 107 | MDRV_VIDEO_UPDATE(phc25)
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| 108 | |
| 109 | MDRV_MC6847_ADD("mc6847", mc6847_intf)
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| 110 | MDRV_MC6847_TYPE(M6847_VERSION_ORIGINAL_NTSC)
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| 111 | |
| 112 | /* sound hardware */
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| 113 | MDRV_SPEAKER_STANDARD_MONO("mono")
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| 114 | MDRV_SOUND_ADD("ay8910", AY8910, 3579545/2)
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| 115 | MDRV_SOUND_CONFIG(ay8910_intf)
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| 116 | MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
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| 117 |
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| 118 | /* internal ram */
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| 119 | MDRV_RAM_ADD("messram")
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| 120 | MDRV_RAM_DEFAULT_SIZE("16K")
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| 121 | MACHINE_DRIVER_END
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| 122 | |
| 123 | /* ROM definition */
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| 124 | ROM_START( phc25 )
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| 125 | ROM_REGION( 0x8000, "maincpu", 0 )
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| 126 | ROM_LOAD( "phc25rom.bin", 0x0000, 0x6000, CRC(c442ed57) SHA1(af0a6a6be8e48a56b6960f89c76bad6320ea0f55))
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| 127 | |
| 128 | ROM_REGION( 0x1000, "chargen", 0 )
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| 129 | ROM_LOAD( "chargen.bin", 0x0000, 0x1000, NO_DUMP)
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| 130 | ROM_END
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| 131 | |
| 132 | /* Driver */
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| 133 | |
| 134 | /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
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| 135 | COMP( 1983, phc25, 0, 0, phc25, phc25, 0, "Sanyo", "PHC-25", GAME_NOT_WORKING | GAME_NO_SOUND)
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| 136 | |