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hng64: Implemented sprite clearance capability, fixes garbage gfxs as seen in Samurai Shodown 64 1 & 2 [Angelo Salese]

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This commit is contained in:
Angelo Salese 2009-11-24 17:08:48 +00:00
parent 70c71abae8
commit 8307ee05d0
1 changed files with 50 additions and 3 deletions
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53
src/mame/drivers/hng64.c
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@ -615,7 +615,7 @@ static READ32_HANDLER( hng64_sysregs_r )
case 0x217c: return 0; //RTC status? case 0x217c: return 0; //RTC status?
} }
printf("%08x\n",offset*4); // printf("%08x\n",offset*4);
//return mame_rand(space->machine)&0xffffffff; //return mame_rand(space->machine)&0xffffffff;
return hng64_sysregs[offset]; return hng64_sysregs[offset];
@ -802,7 +802,7 @@ static READ32_HANDLER( racing_io_r )
static READ32_HANDLER( hng64_dualport_r ) static READ32_HANDLER( hng64_dualport_r )
{ {
printf("dualport R %08x %08x (PC=%08x)\n", offset*4, hng64_dualport[offset], cpu_get_pc(space->cpu)); // printf("dualport R %08x %08x (PC=%08x)\n", offset*4, hng64_dualport[offset], cpu_get_pc(space->cpu));
/* /*
command table: command table:
@ -830,7 +830,7 @@ static READ32_HANDLER( hng64_dualport_r )
static WRITE32_HANDLER( hng64_dualport_w ) static WRITE32_HANDLER( hng64_dualport_w )
{ {
printf("dualport WRITE %08x %08x (PC=%08x)\n", offset*4, hng64_dualport[offset], cpu_get_pc(space->cpu)); // printf("dualport WRITE %08x %08x (PC=%08x)\n", offset*4, hng64_dualport[offset], cpu_get_pc(space->cpu));
COMBINE_DATA (&hng64_dualport[offset]); COMBINE_DATA (&hng64_dualport[offset]);
} }
@ -991,6 +991,51 @@ static READ32_HANDLER( hng64_soundram_r )
return FLIPENDIAN_INT16(datahi) | (FLIPENDIAN_INT16(datalo) << 16); return FLIPENDIAN_INT16(datahi) | (FLIPENDIAN_INT16(datalo) << 16);
} }
/* The following is guesswork, needs confirmation with a test on the real board. */
static WRITE32_HANDLER( hng64_sprite_clear_even_w )
{
static UINT32 spr_offs;
spr_offs = (offset) * 0x10 * 4;
if(ACCESSING_BITS_16_31)
{
memory_write_dword(space, 0x20000000+0x00+0x00+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x08+0x00+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x10+0x00+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x18+0x00+spr_offs, 0x00000000);
}
if(ACCESSING_BITS_8_15)
{
memory_write_dword(space, 0x20000000+0x00+0x20+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x08+0x20+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x10+0x20+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x18+0x20+spr_offs, 0x00000000);
}
}
static WRITE32_HANDLER( hng64_sprite_clear_odd_w )
{
static UINT32 spr_offs;
spr_offs = (offset) * 0x10 * 4;
if(ACCESSING_BITS_16_31)
{
memory_write_dword(space, 0x20000000+0x04+0x00+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x0c+0x00+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x14+0x00+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x1c+0x00+spr_offs, 0x00000000);
}
if(ACCESSING_BITS_0_15)
{
memory_write_dword(space, 0x20000000+0x04+0x20+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x0c+0x20+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x14+0x20+spr_offs, 0x00000000);
memory_write_dword(space, 0x20000000+0x1c+0x20+spr_offs, 0x00000000);
}
}
static ADDRESS_MAP_START( hng_map, ADDRESS_SPACE_PROGRAM, 32 ) static ADDRESS_MAP_START( hng_map, ADDRESS_SPACE_PROGRAM, 32 )
AM_RANGE(0x00000000, 0x00ffffff) AM_RAM AM_BASE(&hng_mainram) AM_RANGE(0x00000000, 0x00ffffff) AM_RAM AM_BASE(&hng_mainram)
@ -1010,6 +1055,8 @@ static ADDRESS_MAP_START( hng_map, ADDRESS_SPACE_PROGRAM, 32 )
// Video // Video
AM_RANGE(0x20000000, 0x2000bfff) AM_RAM AM_BASE(&hng64_spriteram) // Sprites AM_RANGE(0x20000000, 0x2000bfff) AM_RAM AM_BASE(&hng64_spriteram) // Sprites
AM_RANGE(0x2000d800, 0x2000e3ff) AM_WRITE(hng64_sprite_clear_even_w)
AM_RANGE(0x2000e400, 0x2000efff) AM_WRITE(hng64_sprite_clear_odd_w)
AM_RANGE(0x20010000, 0x20010013) AM_RAM AM_BASE(&hng64_spriteregs) // Sprites Registers AM_RANGE(0x20010000, 0x20010013) AM_RAM AM_BASE(&hng64_spriteregs) // Sprites Registers
AM_RANGE(0x20100000, 0x2017ffff) AM_RAM_WRITE(hng64_videoram_w) AM_BASE(&hng64_videoram) // Tilemap AM_RANGE(0x20100000, 0x2017ffff) AM_RAM_WRITE(hng64_videoram_w) AM_BASE(&hng64_videoram) // Tilemap
AM_RANGE(0x20190000, 0x20190037) AM_RAM AM_BASE(&hng64_videoregs) // Video Registers AM_RANGE(0x20190000, 0x20190037) AM_RAM AM_BASE(&hng64_videoregs) // Video Registers