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Fixed various issues in the AA emulation, this makes Poizone to theoretically work as current ertictac.c emulation (not yet enabled) [Angelo Salese]

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Angelo Salese 2010-08-22 12:16:20 +00:00
parent 0bd74f6269
commit ca59516c2f
2 changed files with 24 additions and 22 deletions
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2
src/mame/includes/archimds.h
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@ -60,7 +60,7 @@ extern READ32_HANDLER(archimedes_vidc_r);
extern WRITE32_HANDLER(archimedes_vidc_w);
extern UINT8 i2c_clk;
extern INT16 memc_pages[(32*1024*1024)/(4096)]; // the logical RAM area is 32 megs, and the smallest page size is 4k
extern INT16 memc_pages[0x2000]; // the logical RAM area is 32 megs, and the smallest page size is 4k
extern UINT32 vidc_regs[256];
extern UINT8 ioc_regs[0x80/4];
extern UINT8 vidc_bpp_mode;

42
src/mame/machine/archimds.c
View File

@ -46,9 +46,9 @@ static int memc_latchrom;
static UINT32 ioc_timercnt[4], ioc_timerout[4];
static UINT32 vidc_vidstart, vidc_vidend, vidc_vidinit,vidc_vidcur;
static UINT32 vidc_sndstart, vidc_sndend, vidc_sndcur;
static UINT8 video_dma_on;
static UINT8 video_dma_on,audio_dma_on;
UINT8 i2c_clk;
INT16 memc_pages[(32*1024*1024)/(4096)]; // the logical RAM area is 32 megs, and the smallest page size is 4k
INT16 memc_pages[0x2000]; // the logical RAM area is 32 megs, and the smallest page size is 4k
UINT32 vidc_regs[256];
UINT8 ioc_regs[0x80/4];
UINT8 vidc_bpp_mode;
@ -122,7 +122,7 @@ static TIMER_CALLBACK( vidc_video_tick )
if(video_dma_on)
{
if (vidc_vidcur >= vidc_vidend)
if (vidc_vidcur >= vidc_vidend-vidc_vidstart)
vidc_vidcur = 0;
timer_adjust_oneshot(vid_timer, ATTOTIME_IN_USEC(1), 0);
@ -135,17 +135,22 @@ static TIMER_CALLBACK( vidc_audio_tick )
{
address_space *space = cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM);
dac_signed_data_w(space->machine->device("dac"), (space->read_byte(vidc_sndcur)));
dac_signed_data_w(space->machine->device("dac"), (space->read_byte(vidc_sndstart+vidc_sndcur)));
vidc_sndcur++;
if (vidc_sndcur >= vidc_sndend)
if(audio_dma_on)
{
if (vidc_sndcur >= vidc_sndend-vidc_sndstart)
{
vidc_sndcur = 0;
archimedes_request_irq_b(machine, ARCHIMEDES_IRQB_SOUND_EMPTY);
/* TODO */
timer_adjust_oneshot(snd_timer, attotime_never, 0);
dac_signed_data_w(space->machine->device("dac"), 0x80);
}
}
else
{
//timer_adjust_oneshot(snd_timer, attotime_never, 0);
//dac_signed_data_w(space->machine->device("dac"), 0x80);
}
}
@ -831,22 +836,22 @@ WRITE32_HANDLER(archimedes_memc_w)
case 1: /* video start */
logerror("MEMC: VIDSTART %08x\n",data);
vidc_vidstart = ((data>>2)&0x7fff)*16;
vidc_vidstart = 0x2000000 | (((data>>2)&0x7fff)*16);
break;
case 2: /* video end */
logerror("MEMC: VIDEND %08x\n",data);
vidc_vidend = ((data>>2)&0x7fff)*16;
vidc_vidend = 0x2000000 | (((data>>2)&0x7fff)*16);
break;
case 4: /* sound start */
logerror("MEMC: VIDSNDSTART %08x\n",data);
vidc_sndstart = ((data>>2)&0x7fff)*16;
vidc_sndstart = 0x2000000 | ((data>>2)&0x7fff)*16;
break;
case 5: /* sound end */
logerror("MEMC: VIDSNDEND %08x\n",data);
vidc_sndend = ((data>>2)&0x7fff)*16;
vidc_sndend = 0x2000000 | ((data>>2)&0x7fff)*16;
break;
case 7: /* Control */
@ -855,6 +860,7 @@ WRITE32_HANDLER(archimedes_memc_w)
logerror("(PC = %08x) MEMC: %x to Control (page size %d, %s, %s)\n", cpu_get_pc(space->cpu), data & 0x1ffc, page_sizes[memc_pagesize], ((data>>10)&1) ? "Video DMA on" : "Video DMA off", ((data>>11)&1) ? "Sound DMA on" : "Sound DMA off");
video_dma_on = ((data>>10)&1);
audio_dma_on = ((data>>11)&1);
if ((data>>10)&1)
{
@ -869,17 +875,13 @@ WRITE32_HANDLER(archimedes_memc_w)
/* FIXME: is the frequency correct? */
sndhz = (250000.0) / (double)((vidc_regs[0xc0]&0xff)+2);
logerror("MEMC: Starting audio DMA at %f Hz, buffer from %x to %x\n", sndhz, vidc_sndstart, vidc_sndend);
printf("MEMC: Starting audio DMA at %f Hz, buffer from %x to %x\n", sndhz, vidc_sndstart, vidc_sndend);
vidc_sndcur = vidc_sndstart;
vidc_sndcur = 0;
timer_adjust_periodic(snd_timer, ATTOTIME_IN_HZ(sndhz), 0, ATTOTIME_IN_HZ(sndhz));
}
else
{
//timer_adjust_oneshot(snd_timer, attotime_never, 0);
//dac_signed_data_w(space->machine->device("dac"), 0x80);
}
break;
default: