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Implemented RAMDAC for gamtor.c

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This commit is contained in:
Angelo Salese 2011-10-10 20:51:10 +00:00
parent 7819df93f2
commit eea9659e86
1 changed files with 32 additions and 4 deletions
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36
src/mame/drivers/gamtor.c
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@ -37,7 +37,7 @@ public:
UINT32* m_tmapram1; UINT32* m_tmapram1;
UINT32* m_tmapram2; UINT32* m_tmapram2;
struct { int r,g,b,offs,offs_internal; } m_pal;
}; };
static WRITE32_HANDLER( gamtor_unk_w ) static WRITE32_HANDLER( gamtor_unk_w )
@ -72,9 +72,37 @@ static WRITE32_HANDLER( gamtor_unk4_w )
} }
static WRITE32_HANDLER( gamtor_unk5_w ) static WRITE8_HANDLER( gamtor_ramdac_w )
{ {
gaminator_state *state = space->machine().driver_data<gaminator_state>();
switch(offset)
{
case 3:
state->m_pal.offs = data;
state->m_pal.offs_internal = 0;
break;
case 2:
switch(state->m_pal.offs_internal)
{
case 0:
state->m_pal.r = ((data & 0x3f) << 2) | ((data & 0x30) >> 4);
state->m_pal.offs_internal++;
break;
case 1:
state->m_pal.g = ((data & 0x3f) << 2) | ((data & 0x30) >> 4);
state->m_pal.offs_internal++;
break;
case 2:
state->m_pal.b = ((data & 0x3f) << 2) | ((data & 0x30) >> 4);
palette_set_color(space->machine(), state->m_pal.offs, MAKE_RGB(state->m_pal.r, state->m_pal.g, state->m_pal.b));
state->m_pal.offs_internal = 0;
state->m_pal.offs++;
state->m_pal.offs&=0xff;
break;
}
break;
}
} }
static WRITE32_HANDLER( gamtor_unk6_w ) static WRITE32_HANDLER( gamtor_unk6_w )
@ -167,7 +195,7 @@ static ADDRESS_MAP_START( gaminator_map, AS_PROGRAM, 32 )
/* some kind of video control / blitter? */ /* some kind of video control / blitter? */
AM_RANGE(0x400003c0, 0x400003c3) AM_WRITE( gamtor_unk3_w ) AM_RANGE(0x400003c0, 0x400003c3) AM_WRITE( gamtor_unk3_w )
AM_RANGE(0x400003c4, 0x400003c7) AM_READWRITE( gamtor_unk4_r, gamtor_unk4_w ) AM_RANGE(0x400003c4, 0x400003c7) AM_READWRITE( gamtor_unk4_r, gamtor_unk4_w )
AM_RANGE(0x400003c8, 0x400003cb) AM_WRITE( gamtor_unk5_w ) AM_RANGE(0x400003c8, 0x400003cb) AM_WRITE8( gamtor_ramdac_w, 0xffffffff )
AM_RANGE(0x400003cc, 0x400003cf) AM_WRITE( gamtor_unk6_w ) AM_RANGE(0x400003cc, 0x400003cf) AM_WRITE( gamtor_unk6_w )
AM_RANGE(0x400003d4, 0x400003d7) AM_READWRITE( gamtor_unk2_r, gamtor_unk2_w ) AM_RANGE(0x400003d4, 0x400003d7) AM_READWRITE( gamtor_unk2_r, gamtor_unk2_w )
AM_RANGE(0x400003d8, 0x400003fb) AM_READ( gamtor_unk7_r ) AM_RANGE(0x400003d8, 0x400003fb) AM_READ( gamtor_unk7_r )
@ -199,7 +227,7 @@ static MACHINE_CONFIG_START( gaminator, gaminator_state )
MCFG_SCREEN_VISIBLE_AREA(0*8, 64*8-1, 0*8, 32*8-1) MCFG_SCREEN_VISIBLE_AREA(0*8, 64*8-1, 0*8, 32*8-1)
MCFG_SCREEN_UPDATE(gamtor) MCFG_SCREEN_UPDATE(gamtor)
MCFG_PALETTE_LENGTH(0x200) MCFG_PALETTE_LENGTH(0x100)
MCFG_VIDEO_START(gamtor) MCFG_VIDEO_START(gamtor)