mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 07:17:45 -04:00
f8ef8ff710
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@318 be3aeb3a-fb24-0410-a615-afba39da0efa
51 lines
942 B
C
51 lines
942 B
C
#include "../../PicoInt.h"
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svp_t *svp = NULL;
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void PicoSVPInit(void)
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{
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void *tmp;
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elprintf(0xffff, "SVP init");
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tmp = realloc(Pico.rom, 0x200000 + sizeof(*svp));
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if (tmp == NULL)
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{
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elprintf(EL_STATUS, "OOM for SVP data");
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return;
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}
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Pico.rom = tmp;
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svp = (void *) ((char *)tmp + 0x200000);
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memset(svp, 0, sizeof(*svp));
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// init ok, setup hooks..
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PicoRead16Hook = PicoSVPRead16;
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PicoWrite8Hook = PicoSVPWrite8;
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PicoWrite16Hook = PicoSVPWrite16;
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PicoDmaHook = PicoSVPDma;
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}
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void PicoSVPReset(void)
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{
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elprintf(0xffff, "SVP reset");
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ssp1601_reset(&svp->ssp1601);
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}
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int PicoSVPDma(unsigned int source, unsigned short **srcp, unsigned short **limitp)
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{
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if ((source & 0xfe0000) == 0x300000)
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{
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elprintf(EL_VDPDMA|0xffff, "SVP DmaSlow from %06x", source);
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source &= 0x1fffe;
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*srcp = (unsigned short *)(svp->ram + source);
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*limitp = (unsigned short *)(svp->ram + sizeof(svp->ram));
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return 1;
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}
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return 0;
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}
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