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give the vs. suprmrio bootlegs with z80 their own machine struct etc. not really sure what they want tho, they wait for 2002 to change, but that's a PPU address, forcing it to change makes the games run with broken sprites / flickering.
I think they use the z80 + SN for sound instead of the real NES sound, it's probably an interesting case for somebody who knows the NES a bit better than I do, obviously being cloned hardware a couple of other bits could have changed. (nw)
This commit is contained in:
David Haywood
parent
aef8991fff
commit
91eb8f2016
@ -139,6 +139,8 @@ Changes:
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#include "emu.h"
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#include "cpu/m6502/n2a03.h"
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#include "cpu/z80/z80.h"
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#include "sound/sn76496.h"
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#include "rendlay.h"
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#include "video/ppu2c0x.h"
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#include "sound/dac.h"
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@ -255,6 +257,36 @@ static ADDRESS_MAP_START( vsnes_cpu2_map, AS_PROGRAM, 8, vsnes_state )
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AM_RANGE(0x8000, 0xffff) AM_ROM
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ADDRESS_MAP_END
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// likely doesn't have the PSGs
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// they wait on 0x2002 to change, if you toggle that the game runs with no sprites, it does still play music tho
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// but I think the real bootleg board uses the z80 and alt sound hardware instead?
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static ADDRESS_MAP_START( vsnes_cpu1_bootleg_map, AS_PROGRAM, 8, vsnes_state )
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AM_RANGE(0x0000, 0x07ff) AM_MIRROR(0x1800) AM_RAM AM_SHARE("work_ram")
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AM_RANGE(0x2000, 0x3fff) AM_DEVREADWRITE("ppu1", ppu2c0x_device, read, write)
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AM_RANGE(0x4011, 0x4011) AM_DEVWRITE("dac1", dac_device, write_unsigned8)
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AM_RANGE(0x4000, 0x4013) AM_DEVREADWRITE_LEGACY("nes1", nes_psg_r, nes_psg_w)
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AM_RANGE(0x4014, 0x4014) AM_WRITE(sprite_dma_0_w)
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AM_RANGE(0x4015, 0x4015) AM_READWRITE(psg1_4015_r, psg1_4015_w) /* PSG status / first control register */
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AM_RANGE(0x4016, 0x4016) AM_READWRITE(vsnes_in0_r, vsnes_in0_w)
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AM_RANGE(0x4017, 0x4017) AM_READ(vsnes_in1_r) AM_WRITE(psg1_4017_w) /* IN1 - input port 2 / PSG second control register */
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AM_RANGE(0x4020, 0x4020) AM_READWRITE(vsnes_coin_counter_r, vsnes_coin_counter_w)
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AM_RANGE(0x6000, 0x7fff) AM_RAMBANK("extra1")
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AM_RANGE(0x8000, 0xffff) AM_ROM
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ADDRESS_MAP_END
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READ8_MEMBER( vsnes_state::vsnes_bootleg_z80_latch_r )
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{
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return 0x00;
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}
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static ADDRESS_MAP_START( vsnes_bootleg_z80_map, AS_PROGRAM, 8, vsnes_state )
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AM_RANGE(0x0000, 0x1fff) AM_ROM
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AM_RANGE(0x2000, 0x23ff) AM_RAM
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AM_RANGE(0x4000, 0x4000) AM_READ( vsnes_bootleg_z80_latch_r )
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ADDRESS_MAP_END
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/******************************************************************************/
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@ -1809,6 +1841,59 @@ static MACHINE_CONFIG_START( vsdual, vsnes_state )
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MACHINE_CONFIG_END
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static const sn76496_config psg_intf =
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{
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DEVCB_NULL
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};
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static MACHINE_CONFIG_START( vsnes_bootleg, vsnes_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu", M6502,N2A03_DEFAULTCLOCK) // R6502AP
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MCFG_CPU_PROGRAM_MAP(vsnes_cpu1_bootleg_map)
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/* some carts also trigger IRQs */
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MCFG_MACHINE_RESET_OVERRIDE(vsnes_state,vsnes)
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MCFG_MACHINE_START_OVERRIDE(vsnes_state,vsnes)
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MCFG_CPU_ADD("subcpu", Z80,4000000) /* ? MHz */ // Z8400APS-Z80CPU
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MCFG_CPU_PROGRAM_MAP(vsnes_bootleg_z80_map)
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MCFG_CPU_VBLANK_INT_DRIVER("screen1", vsnes_state, irq0_line_hold)
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/* video hardware */
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MCFG_SCREEN_ADD("screen1", RASTER)
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MCFG_SCREEN_REFRESH_RATE(60)
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MCFG_SCREEN_SIZE(32*8, 262)
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MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 30*8-1)
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MCFG_SCREEN_UPDATE_DRIVER(vsnes_state, screen_update_vsnes)
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MCFG_PALETTE_LENGTH(8*4*16)
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MCFG_PALETTE_INIT_OVERRIDE(vsnes_state,vsnes)
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MCFG_VIDEO_START_OVERRIDE(vsnes_state,vsnes)
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MCFG_PPU2C04_ADD("ppu1", vsnes_ppu_interface_1)
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MCFG_PPU2C0X_SET_SCREEN("screen1")
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MCFG_PPU2C0X_SET_NMI(vsnes_state, ppu_irq_1)
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/* sound hardware */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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MCFG_SOUND_ADD("nes1", NES, N2A03_DEFAULTCLOCK)
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MCFG_SOUND_CONFIG(nes_interface_1)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
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MCFG_DAC_ADD("dac1")
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
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// instead of the above?
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MCFG_SOUND_ADD("sn1", SN76489A, 4000000) // ?? Mhz
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
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MCFG_SOUND_CONFIG(psg_intf)
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MACHINE_CONFIG_END
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/******************************************************************************/
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/* Palettes were obtained for each RGB PPU type by running a test program
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@ -2716,8 +2801,8 @@ GAME( 1986, rbibb, 0, vsnes, rbibb, vsnes_state, rbibb, ROT0,
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GAME( 1986, rbibba, rbibb, vsnes, rbibb, vsnes_state, rbibb, ROT0, "Namco", "Vs. Atari R.B.I. Baseball (set 2)", 0 )
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GAME( 1986, suprmrio, 0, vsnes, suprmrio, vsnes_state, vsnormal, ROT0, "Nintendo", "Vs. Super Mario Bros. (set SM4-4 E)", 0 )
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GAME( 1986, suprmrioa,suprmrio, vsnes, suprmrio, vsnes_state, vsnormal, ROT0, "Nintendo", "Vs. Super Mario Bros. (set ?, harder)", 0 )
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GAME( 1986, suprmriobl,suprmrio,vsnes, suprmrio, vsnes_state, vsnormal, ROT0, "bootleg", "Vs. Super Mario Bros. (bootleg with Z80, set 1)", GAME_NOT_WORKING )
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GAME( 1986, suprmriobl2,suprmrio,vsnes, suprmrio, vsnes_state, vsnormal, ROT0, "bootleg", "Vs. Super Mario Bros. (bootleg with Z80, set 2)", GAME_NOT_WORKING )
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GAME( 1986, suprmriobl,suprmrio,vsnes_bootleg,suprmrio,vsnes_state,vsnormal, ROT0, "bootleg", "Vs. Super Mario Bros. (bootleg with Z80, set 1)", GAME_NOT_WORKING )
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GAME( 1986, suprmriobl2,suprmrio,vsnes_bootleg,suprmrio,vsnes_state,vsnormal, ROT0, "bootleg", "Vs. Super Mario Bros. (bootleg with Z80, set 2)", GAME_NOT_WORKING )
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GAME( 1988, skatekds, suprmrio, vsnes, suprmrio, vsnes_state, vsnormal, ROT0, "hack (Two-Bit Score)", "Vs. Skate Kids. (Graphic hack of Super Mario Bros.)", 0 )
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GAME( 1985, vsskykid, 0, vsnes, vsskykid, vsnes_state, MMC3, ROT0, "Namco", "Vs. Super SkyKid" , 0 )
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GAME( 1987, tkoboxng, 0, vsnes, tkoboxng, vsnes_state, tkoboxng, ROT0, "Namco / Data East USA", "Vs. T.K.O. Boxing", 0 )
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@ -114,6 +114,8 @@ public:
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void mapper4_irq( int scanline, int vblank, int blanked );
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void ppu_irq_1(int *ppu_regs);
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void ppu_irq_2(int *ppu_regs);
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DECLARE_READ8_MEMBER( vsnes_bootleg_z80_latch_r );
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};
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/*----------- defined in video/vsnes.c -----------*/
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