/* Royal Gum Unknown CPU (either Z80 or Z180) - or at least rgum.u47 looks z80 related rgum.u5 is for a 6502? Big Black Box in the middle of the PCB (for encryption, or containing roms?) The ppi at 3000-3003 seems to be a dual port communication thing with the z80. */ #include "emu.h" #include "cpu/z80/z80.h" #include "cpu/m6502/m6502.h" #include "video/mc6845.h" #include "machine/8255ppi.h" #include "sound/ay8910.h" class rgum_state : public driver_device { public: rgum_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) { } UINT8 *m_vram; UINT8 *m_cram; UINT8 m_hbeat; }; static VIDEO_START(royalgum) { } static SCREEN_UPDATE(royalgum) { rgum_state *state = screen->machine().driver_data(); int x,y,count; const gfx_element *gfx = screen->machine().gfx[0]; count = 0; for(y=0;y<32;y++) { for(x=0;x<66;x++) { int tile = state->m_vram[count] | ((state->m_cram[count] & 0xf) <<8); drawgfx_opaque(bitmap,cliprect,gfx,tile,0,0,0,x*8,y*8); count++; } } return 0; } static ADDRESS_MAP_START( rgum_map, AS_PROGRAM, 8 ) AM_RANGE(0x0000, 0x07ff) AM_RAM //not all of it? AM_RANGE(0x0800, 0x0800) AM_DEVWRITE_MODERN("crtc", mc6845_device, address_w) AM_RANGE(0x0801, 0x0801) AM_DEVREADWRITE_MODERN("crtc", mc6845_device, register_r, register_w) AM_RANGE(0x2000, 0x2000) AM_DEVWRITE("aysnd", ay8910_data_w) AM_RANGE(0x2002, 0x2002) AM_DEVREADWRITE("aysnd", ay8910_r, ay8910_address_w) AM_RANGE(0x2801, 0x2801) AM_READNOP //read but value discarded? AM_RANGE(0x2803, 0x2803) AM_READNOP AM_RANGE(0x3000, 0x3003) AM_DEVREADWRITE("ppi8255_0", ppi8255_r, ppi8255_w) AM_RANGE(0x4000, 0x47ff) AM_RAM AM_BASE_MEMBER(rgum_state, m_vram) AM_RANGE(0x5000, 0x57ff) AM_RAM AM_BASE_MEMBER(rgum_state, m_cram) AM_RANGE(0x8000, 0xffff) AM_ROM ADDRESS_MAP_END static CUSTOM_INPUT( rgum_heartbeat_r ) { rgum_state *state = field.machine().driver_data(); state->m_hbeat ^= 1; return state->m_hbeat; } static INPUT_PORTS_START( rgum ) PORT_START("IN0") PORT_DIPNAME( 0x01, 0x01, "IN0" ) PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(rgum_heartbeat_r, NULL) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("IN1") PORT_DIPNAME( 0x01, 0x01, "IN1" ) PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("IN2") PORT_DIPNAME( 0x01, 0x01, "IN2" ) PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_BIT( 0xf0, IP_ACTIVE_HIGH, IPT_UNKNOWN ) //communication port with the z80? PORT_START("DSW1") PORT_DIPNAME( 0x01, 0x01, "DSW1" ) PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("DSW2") PORT_DIPNAME( 0x01, 0x01, "DSW2" ) PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) INPUT_PORTS_END static const gfx_layout tiles8x8_layout = { 8,8, RGN_FRAC(1,3), 3, { RGN_FRAC(0,3),RGN_FRAC(1,3),RGN_FRAC(2,3) }, { 0, 1,2,3,4,5,6,7 }, { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, 8*8 }; static GFXDECODE_START( rgum ) GFXDECODE_ENTRY( "gfx1", 0, tiles8x8_layout, 0, 16 ) GFXDECODE_END static const mc6845_interface mc6845_intf = { "screen", /* screen we are acting on */ 8, /* number of pixels per video memory address */ NULL, /* before pixel update callback */ NULL, /* row update callback */ NULL, /* after pixel update callback */ DEVCB_NULL, /* callback for display state changes */ DEVCB_NULL, /* callback for cursor state changes */ DEVCB_NULL, /* HSYNC callback */ DEVCB_NULL, /* VSYNC callback */ NULL /* update address callback */ }; static const ppi8255_interface ppi8255_intf = { DEVCB_INPUT_PORT("IN0"), /* Port A read */ DEVCB_INPUT_PORT("IN1"), /* Port B read */ DEVCB_INPUT_PORT("IN2"), /* Port C read */ DEVCB_NULL, /* Port A write */ DEVCB_NULL, /* Port B write */ DEVCB_NULL /* Port C write */ }; static const ay8910_interface ay8910_config = { AY8910_LEGACY_OUTPUT, AY8910_DEFAULT_LOADS, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }; static MACHINE_CONFIG_START( rgum, rgum_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", M65C02,24000000/16) /* ? MHz */ MCFG_CPU_PROGRAM_MAP(rgum_map) // MCFG_CPU_VBLANK_INT("screen", nmi_line_pulse) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MCFG_SCREEN_SIZE(256, 256) MCFG_SCREEN_VISIBLE_AREA(0, 256-1, 0, 256-1) MCFG_SCREEN_UPDATE(royalgum) MCFG_MC6845_ADD("crtc", MC6845, 24000000/16, mc6845_intf) /* unknown clock & type, hand tuned to get ~50 fps (?) */ MCFG_PPI8255_ADD( "ppi8255_0", ppi8255_intf ) MCFG_GFXDECODE(rgum) MCFG_PALETTE_LENGTH(0x100) MCFG_VIDEO_START(royalgum) MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("aysnd", AY8910, 24000000/16) /* guessed to use the same xtal as the crtc */ MCFG_SOUND_CONFIG(ay8910_config) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) MACHINE_CONFIG_END ROM_START( rgum ) ROM_REGION( 0x20000, "z80cpu", 0 ) ROM_LOAD( "rgum.u47", 0x00000, 0x20000, CRC(fe410eb9) SHA1(25180ba336269279f251be5483c210a581d27197) ) // encrypted.. 2nd half empty ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "rgum.u5", 0x00000, 0x10000, CRC(9d2d1681) SHA1(1c1da0d970ea2cf58f7961417ab6986cc667da5c) ) // plaintext in here, but firt half is empty ROM_REGION( 0x10000, "unk", 0 ) ROM_LOAD( "rgum.u6", 0x00000, 0x2000, CRC(15a34117) SHA1(c7e0aef4007abfaaa533feb026148ba03230b79f) ) // near the data rom, mostly empty ROM_REGION( 0x18000, "gfx1", 0 ) ROM_LOAD( "rgum.u16", 0x00000, 0x8000, CRC(2a2c8d78) SHA1(2ce335b900dccbc34ad8ae7ae02ec7c75ffcd559) ) // first half empty ROM_CONTINUE(0x00000,0x8000) ROM_LOAD( "rgum.u17", 0x08000, 0x8000, CRC(fae4e41a) SHA1(421aac2b567040c3a56e01aa70880c94450eaf76) ) // first half empty ROM_CONTINUE(0x08000,0x8000) ROM_LOAD( "rgum.u18", 0x10000, 0x8000, CRC(79b17da7) SHA1(31e1845261b0152df56135c212e55c4048b7496f) ) // first half empty ROM_CONTINUE(0x10000,0x8000) ROM_END GAME( 199?, rgum, 0, rgum, rgum, 0, ROT0, "", "Royal Gum (Italy)", GAME_NOT_WORKING | GAME_NO_SOUND )