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Fixed Atari bad logo colors at POST in Area 51:Site 4 [Angelo Salese]

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This commit is contained in:
Angelo Salese 2011-12-29 15:28:40 +00:00
parent 1fe301d758
commit e7a669022e
1 changed files with 19 additions and 10 deletions
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29
src/mame/drivers/mediagx.c
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@ -384,6 +384,7 @@ static WRITE32_HANDLER( disp_ctrl_w )
{
mediagx_state *state = space->machine().driver_data<mediagx_state>();
printf("disp_ctrl_w %08X, %08X, %08X\n", data, offset*4, mem_mask);
COMBINE_DATA(state->m_disp_ctrl_reg + offset);
}
@ -432,18 +433,26 @@ static WRITE32_HANDLER( memory_ctrl_w )
{
mediagx_state *state = space->machine().driver_data<mediagx_state>();
//mame_printf_debug("memory_ctrl_w %08X, %08X, %08X\n", data, offset, mem_mask);
if (offset == 7)
printf("memory_ctrl_w %08X, %08X, %08X\n", data, offset*4, mem_mask);
if (offset == 0x20/4)
{
state->m_pal_index = 0;
}
else if (offset == 8)
{
state->m_pal[state->m_pal_index] = data & 0xff;
state->m_pal_index++;
if (state->m_pal_index >= 768)
if((state->m_disp_ctrl_reg[DC_GENERAL_CFG] & 0x00e00000) == 0x00400000)
{
state->m_pal_index = 0;
// guess: crtc params?
// ...
}
else if((state->m_disp_ctrl_reg[DC_GENERAL_CFG] & 0x00f00000) == 0x00000000)
{
state->m_pal_index = data;
}
else if((state->m_disp_ctrl_reg[DC_GENERAL_CFG] & 0x00f00000) == 0x00100000)
{
state->m_pal[state->m_pal_index] = data & 0xff;
state->m_pal_index++;
if (state->m_pal_index >= 768)
{
state->m_pal_index = 0;
}
}
}
else