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some more SVP work

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@319 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-12-26 19:00:46 +00:00
parent f8ef8ff710
commit 017512f282
8 changed files with 373 additions and 93 deletions
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62
Pico/carthw/svp/svp.c
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@ -2,16 +2,49 @@
svp_t *svp = NULL;
static void PicoSVPReset(void)
{
elprintf(EL_SVP, "SVP reset");
ssp1601_reset(&svp->ssp1601);
}
static void PicoSVPLine(void)
{
// ???
// OSC_NTSC / 3.0 / 60.0 / 262.0 ~= 1139
// OSC_PAL / 3.0 / 50.0 / 312.0 ~= 1137
ssp1601_run(100);
exit(1);
}
static int PicoSVPDma(unsigned int source, unsigned short **srcp, unsigned short **limitp)
{
if ((source & 0xfe0000) == 0x300000)
{
elprintf(EL_VDPDMA|EL_SVP, "SVP DmaSlow from %06x", source);
source &= 0x1fffe;
*srcp = (unsigned short *)(svp->ram + source);
*limitp = (unsigned short *)(svp->ram + sizeof(svp->ram));
return 1;
}
return 0;
}
void PicoSVPInit(void)
{
void *tmp;
elprintf(0xffff, "SVP init");
elprintf(EL_SVP, "SVP init");
tmp = realloc(Pico.rom, 0x200000 + sizeof(*svp));
if (tmp == NULL)
{
elprintf(EL_STATUS, "OOM for SVP data");
elprintf(EL_STATUS|EL_SVP, "OOM for SVP data");
return;
}
@ -24,28 +57,7 @@ void PicoSVPInit(void)
PicoWrite8Hook = PicoSVPWrite8;
PicoWrite16Hook = PicoSVPWrite16;
PicoDmaHook = PicoSVPDma;
}
void PicoSVPReset(void)
{
elprintf(0xffff, "SVP reset");
ssp1601_reset(&svp->ssp1601);
}
int PicoSVPDma(unsigned int source, unsigned short **srcp, unsigned short **limitp)
{
if ((source & 0xfe0000) == 0x300000)
{
elprintf(EL_VDPDMA|0xffff, "SVP DmaSlow from %06x", source);
source &= 0x1fffe;
*srcp = (unsigned short *)(svp->ram + source);
*limitp = (unsigned short *)(svp->ram + sizeof(svp->ram));
return 1;
}
return 0;
PicoResetHook = PicoSVPReset;
PicoLineHook = PicoSVPLine;
}