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cop/heatbrl ram clear stuff

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This commit is contained in:
davidhay 2008-04-12 12:46:45 +00:00
parent 303caf3f8b
commit 15ececf131
1 changed files with 28 additions and 35 deletions
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63
src/mame/machine/seicop.c
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@ -60,6 +60,8 @@ static UINT16 cop_438;
static UINT16 cop_43a;
static UINT16 cop_43c;
static UINT16 cop_clearfill_address;
static UINT16 cop_clearfill_length;
static UINT16 copd2_offs = 0;
@ -1039,7 +1041,7 @@ WRITE16_HANDLER( heatbrl_mcu_w )
{
default:
{
logerror("%06x: COPX unhandled write data %04x at offset %04x\n", activecpu_get_pc(), data, offset*2);
printf("%06x: COPX unhandled write data %04x at offset %04x\n", activecpu_get_pc(), data, offset*2);
break;
}
@ -1063,44 +1065,35 @@ WRITE16_HANDLER( heatbrl_mcu_w )
case (0x470/2): { heatbrl_setgfxbank( cop_mcu_ram[offset] ); break; }
/* Layer Clearing */
case (0x478/2):
case (0x478/2): /* clear address */
{
static UINT16 i;
/*
AM_RANGE(0x100800, 0x100fff) AM_WRITE(legionna_background_w) AM_BASE(&legionna_back_data)
AM_RANGE(0x101000, 0x1017ff) AM_WRITE(legionna_foreground_w) AM_BASE(&legionna_fore_data)
AM_RANGE(0x101800, 0x101fff) AM_WRITE(legionna_midground_w) AM_BASE(&legionna_mid_data)
AM_RANGE(0x102000, 0x102fff) AM_WRITE(legionna_text_w) AM_BASE(&legionna_textram)
*/
switch(cop_mcu_ram[offset])
{
/*layer clearance*/
case 0x4080:
/*text layer*/
for(i=0;i<0x1000;i+=2)
program_write_word(i+0x102000,0x0000);
/*background layer*/
for(i=0;i<0x800;i+=2)
program_write_word(i+0x100800,0x0000);
break;
case 0x4100: break;
case 0x41c0: break;
//default: popmessage("%04x",cop_mcu_ram[offset]);
}
cop_clearfill_address = data; // << 6 to get actual address
printf("%06x: COPX set layer clear address to %04x (actual %08x)\n", activecpu_get_pc(), data, cop_clearfill_address<<6);
break;
}
case (0x47a/2): /* clear length */
{
cop_clearfill_length = data;
printf("%06x: COPX set layer clear length to %04x (actual %08x)\n", activecpu_get_pc(), data, cop_clearfill_length<<5);
/* do the fill */
{
UINT32 length, address;
int i;
address = cop_clearfill_address << 6;
length = (cop_clearfill_length+1) << 5;
for (i=address;i<address+length;i+=2)
{
program_write_word(i, 0x0000);
}
}
}
/*sprite ram clear(Guess)*/
case (0x47e/2):
{
static UINT16 i;
if(cop_mcu_ram[0x47e/2] == 0x118)
{
for(i=0;i<0x800;i+=2)
program_write_word((0x103000 | i),0x0000);
}
break;
}
/* unknown, related to clears? */
//case (0x47e/2): { break; }
/* Registers */