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jalmah.cpp: Improve fake palette DMA behaviour, avoid corrupt colors for girls [Angelo Salese]

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This commit is contained in:
angelosa 2017-10-11 04:35:36 +02:00
parent 53a8f2695f
commit 9b333b3cc5
1 changed files with 7 additions and 3 deletions
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10
src/mame/drivers/jalmah.cpp
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@ -744,12 +744,16 @@ WRITE16_MEMBER(jalmah_state::urashima_dma_w)
}
/*same as $f00c0 sub-routine,but with additional work-around,to remove from here...*/
// TODO: hackish, how the MCU actually do this?
void jalmah_state::daireika_palette_dma(uint16_t val)
{
address_space &space = m_maincpu->space(AS_PROGRAM);
uint32_t index_1, index_2, src_addr, tmp_addr;
/*a0=301c0+jm_shared_ram[0x540/2] & 0xf00 */
/*a1=88000*/
if(val == 0)
return;
src_addr = 0x301c0 + (val * 0x40);
// popmessage("%08x",src_addr);
for(index_1 = 0; index_1 < 0x200; index_1 += 0x20)
@ -769,7 +773,7 @@ void jalmah_state::daireika_mcu_run()
{
uint16_t *jm_shared_ram = m_jm_shared_ram;
if(((jm_shared_ram[0x550/2] & 0xf00) == 0x700) && ((jm_shared_ram[0x540/2] & 0xf00) != m_dma_old))
if((jm_shared_ram[0x540/2] & 0xf00) != m_dma_old && jm_shared_ram[0x54e/2] == 1)
{
m_dma_old = jm_shared_ram[0x540/2] & 0xf00;
daireika_palette_dma(((jm_shared_ram[0x540/2] & 0x0f00) >> 8));
@ -2144,8 +2148,8 @@ WRITE16_MEMBER(jalmah_state::daireika_mcu_w)
/*TX function?*/
jm_shared_ram[0x0126/2] = 0x4ef9;
jm_shared_ram[0x0128/2] = 0x0010;
jm_shared_ram[0x012a/2] = 0x8980;
jm_shared_ram[0x0128/2] = 0x0000;//0x0010;
jm_shared_ram[0x012a/2] = 0x2684;//0x8980;
//m_pri $f0590
jm_mcu_code[0x8980/2] = 0x33fc;