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palette DMA feature clarifying, no whatsnew

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This commit is contained in:
Angelo Salese 2010-12-27 23:36:47 +00:00
parent 9db8cca10a
commit 9cb5563740
1 changed files with 24 additions and 27 deletions
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51
src/mame/machine/seicop.c
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@ -1379,7 +1379,7 @@ static UINT16 cop_43c;
static UINT16 cop_dma_src[0x200];
static UINT16 cop_dma_size[0x200];
static UINT16 cop_dma_dst[0x200];
static UINT16 cop_dma_src_param[0x200];
static UINT16 cop_dma_fade_table;
static UINT16 cop_dma_trigger = 0;
static UINT16 cop_scale;
@ -2010,6 +2010,8 @@ static READ16_HANDLER( generic_cop_r )
static UINT32 fill_val;
static UINT8 pal_brightness_val,pal_brightness_mode;
static WRITE16_HANDLER( generic_cop_w )
{
static UINT32 temp32;
@ -2051,42 +2053,42 @@ static WRITE16_HANDLER( generic_cop_w )
case (0x03a/2): { cop_43a = data; break; }
case (0x03c/2): { cop_43c = data; break; }
/* brightness control? */
case (0x05a/2):
case (0x05c/2):
break;
/* brightness control */
case (0x05a/2): pal_brightness_val = data & 0xff; break;
case (0x05c/2): pal_brightness_mode = data & 0xff; break;
case (0x280/2):
break;
/* DMA / layer clearing */
/* used in palette DMAs, for fading effects */
case (0x076/2):
cop_dma_src_param[cop_dma_trigger] = data;
cop_dma_fade_table = data;
break;
case (0x078/2): /* clear address */
case (0x078/2): /* DMA source address */
{
cop_dma_src[cop_dma_trigger] = data; // << 6 to get actual address
//seibu_cop_log("%06x: COPX set layer clear address to %04x (actual %08x)\n", cpu_get_pc(space->cpu), data, data<<6);
break;
}
case (0x07a/2): /* clear length */
case (0x07a/2): /* DMA length */
{
cop_dma_size[cop_dma_trigger] = data;
//seibu_cop_log("%06x: COPX set layer clear length to %04x (actual %08x)\n", cpu_get_pc(space->cpu), data, data<<5);
break;
}
case (0x07c/2): /* clear value? */
case (0x07c/2): /* DMA destination */
{
cop_dma_dst[cop_dma_trigger] = data;
//seibu_cop_log("%06x: COPX set layer clear value to %04x (actual %08x)\n", cpu_get_pc(space->cpu), data, data<<6);
break;
}
/* unknown, related to clears? / DMA? */
case (0x07e/2):
case (0x07e/2): /* DMA parameter */
{
cop_dma_trigger = data;
//seibu_cop_log("%06x: COPX set layer clear trigger? to %04x\n", cpu_get_pc(space->cpu), data);
@ -2118,7 +2120,6 @@ static WRITE16_HANDLER( generic_cop_w )
case (0x0a6/2): { cop_register[3] = (cop_register[3]&0x0000ffff)|(cop_mcu_ram[offset]<<16); break; }
case (0x0c6/2): { cop_register[3] = (cop_register[3]&0xffff0000)|(cop_mcu_ram[offset]<<0); break; }
/* was dma_dst */
case (0x0a8/2): { cop_register[4] = (cop_register[4]&0x0000ffff)|(cop_mcu_ram[offset]<<16); break; }
case (0x0c8/2): { cop_register[4] = (cop_register[4]&0xffff0000)|(cop_mcu_ram[offset]<<0); break; }
@ -2366,20 +2367,22 @@ static WRITE16_HANDLER( generic_cop_w )
{
static UINT32 src,dst,size,i;
/* TODO: understand all the differences between triggers!
0x80 is used by Legionnaire (plain DMA)
0x81 is used by SD Gundam and Godzilla (unknown purpose)
0x86 is used by Seibu Cup Soccer (DMA with a table, doesn't yet work)
0x87 is used by Denjin Makai (DMA with inverted word endianess)
/*
Apparently all of those are just different DMA channels, brightness effects are done thru a RAM table and the pal_brightness_val / mode (Not yet done)
0x80 is used by Legionnaire
0x81 is used by SD Gundam and Godzilla
0x86 is used by Seibu Cup Soccer
0x87 is used by Denjin Makai
*/
//if(dma_trigger != 0x87)
// printf("SRC: %08x %08x DST:%08x SIZE:%08x TRIGGER: %08x\n",dma_src,cop_dma_src_param,dma_dst,dma_size,dma_trigger);
printf("SRC: %08x %08x DST:%08x SIZE:%08x TRIGGER: %08x %02x %02x\n",cop_dma_src[cop_dma_trigger] << 6,cop_dma_fade_table * 0x400,cop_dma_dst[cop_dma_trigger] << 6,cop_dma_size[cop_dma_trigger] << 5,cop_dma_trigger,pal_brightness_val,pal_brightness_mode);
if(cop_dma_trigger == 0x81)
src = (cop_dma_src[cop_dma_trigger] << 6); //FIXME: SD Gundam doesn't like the extra param, maybe it has a different flag?
src = (cop_dma_src[cop_dma_trigger] << 6);
else
src = (cop_dma_src[cop_dma_trigger] << 6) + (cop_dma_src_param[cop_dma_trigger] * 0x400);
src = (cop_dma_src[cop_dma_trigger] << 6) + (cop_dma_fade_table * 0x400);
dst = (cop_dma_dst[cop_dma_trigger] << 6);
size = ((cop_dma_size[cop_dma_trigger] << 5) - (cop_dma_dst[cop_dma_trigger] << 6) + 0x20)/2;
@ -2458,13 +2461,10 @@ static WRITE16_HANDLER( generic_cop_w )
return;
}
/* private buffer copies */
if ((cop_dma_trigger==0x14) || (cop_dma_trigger==0x15)) return;
printf("SRC: %08x %08x DST:%08x SIZE:%08x TRIGGER: %08x\n",cop_dma_src[cop_dma_trigger] << 6,cop_dma_src_param[cop_dma_trigger] * 0x400,cop_dma_dst[cop_dma_trigger] << 6,cop_dma_size[cop_dma_trigger] << 5,cop_dma_trigger);
//printf("SRC: %08x DST:%08x SIZE:%08x TRIGGER: %08x\n",dma_src,dma_dst,dma_size,dma_trigger);
printf("SRC: %08x %08x DST:%08x SIZE:%08x TRIGGER: %08x\n",cop_dma_src[cop_dma_trigger] << 6,cop_dma_fade_table,cop_dma_dst[cop_dma_trigger] << 6,cop_dma_size[cop_dma_trigger] << 5,cop_dma_trigger);
break;
}
@ -2789,11 +2789,8 @@ WRITE16_HANDLER( denjinmk_mcu_w )
generic_cop_w(space, offset, data, mem_mask);
break;
//case (0x05a/2): { /* brightness?? */ break; }
case (0x070/2): { denjinmk_setgfxbank(cop_mcu_ram[offset]); break; }
//case (0x280/2): { /* trigger.. something */ break; }
case (0x300/2): { seibu_main_word_w(space,0,cop_mcu_ram[offset],0x00ff); break; }
case (0x304/2): { seibu_main_word_w(space,1,cop_mcu_ram[offset],0x00ff); break; }
case (0x310/2): { seibu_main_word_w(space,4,cop_mcu_ram[offset],0x00ff); break; }