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Decoded color proms and fixed bitplanes in Mirax

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This commit is contained in:
Angelo Salese 2009-05-25 21:54:47 +00:00
parent a75112d480
commit fdc4f315c3
1 changed files with 36 additions and 6 deletions
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42
src/mame/drivers/mirax.c
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@ -145,7 +145,7 @@ static const gfx_layout layout16 =
16,16,
RGN_FRAC(1,3),
3,
{ 0,RGN_FRAC(1,3),RGN_FRAC(2,3)},
{ RGN_FRAC(2,3),RGN_FRAC(1,3),RGN_FRAC(0,3)},
{ 0, 1, 2, 3, 4, 5, 6, 7 ,
0+8*8,1+8*8,2+8*8,3+8*8,4+8*8,5+8*8,6+8*8,7+8*8},
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
@ -158,22 +158,51 @@ static const gfx_layout layout8 =
8,8,
RGN_FRAC(1,3),
3,
{ 0, RGN_FRAC(1,3), RGN_FRAC(2,3)},
{ RGN_FRAC(2,3),RGN_FRAC(1,3),RGN_FRAC(0,3)},
{ 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( mirax )
GFXDECODE_ENTRY( "gfx1", 0, layout8, 0, 1 )
GFXDECODE_ENTRY( "gfx2", 0, layout16, 0, 1 )
GFXDECODE_ENTRY( "gfx3", 0, layout16, 0, 1 )
GFXDECODE_ENTRY( "gfx1", 0, layout8, 0, 8 )
GFXDECODE_ENTRY( "gfx2", 0, layout16, 0, 8 )
GFXDECODE_ENTRY( "gfx3", 0, layout16, 0, 8 )
GFXDECODE_END
static INPUT_PORTS_START( mirax )
INPUT_PORTS_END
PALETTE_INIT( mirax )
{
int i;
for (i = 0;i < machine->config->total_colors;i++)
{
int bit0,bit1,bit2,r,g,b;
/* red component */
bit0 = (color_prom[i] >> 0) & 0x01;
bit1 = (color_prom[i] >> 1) & 0x01;
bit2 = (color_prom[i] >> 2) & 0x01;
r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
/* green component */
bit0 = (color_prom[i] >> 3) & 0x01;
bit1 = (color_prom[i] >> 4) & 0x01;
bit2 = (color_prom[i] >> 5) & 0x01;
g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
/* blue component */
bit0 = 0;
bit1 = (color_prom[i] >> 6) & 0x01;
bit2 = (color_prom[i] >> 7) & 0x01;
b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
palette_set_color(machine,i,MAKE_RGB(r,g,b));
}
}
static MACHINE_DRIVER_START( mirax )
MDRV_CPU_ADD("maincpu", Z80, 12000000) // audio cpu ?
MDRV_CPU_PROGRAM_MAP(memory_map)
@ -188,7 +217,8 @@ static MACHINE_DRIVER_START( mirax )
MDRV_SCREEN_SIZE(256, 256)
MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 32*8-1)
MDRV_PALETTE_LENGTH(256)
MDRV_PALETTE_LENGTH(0x40)
MDRV_PALETTE_INIT(mirax)
MDRV_GFXDECODE(mirax)
MDRV_VIDEO_START(mirax)
MDRV_VIDEO_UPDATE(mirax)