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[Core/CD] forced DATA track minimal length (fixes BIOS refusing to boot small homebrew demos)

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This commit is contained in:
EkeEke 2015-07-09 23:48:30 +02:00
parent add8607cbf
commit ba2d0dec0e
1 changed files with 9 additions and 3 deletions
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12
core/cd_hw/cdd.c
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@ -347,6 +347,12 @@ int cdd_load(char *filename, char *header)
/* DATA track end LBA (based on DATA file length) */
fseek(fd, 0, SEEK_END);
cdd.toc.tracks[0].end = ftell(fd) / cdd.sectorSize;
/* DATA track length should be at least 2s (BIOS requirement) */
if (cdd.toc.tracks[0].end < 150)
{
cdd.toc.tracks[0].end = 150;
}
/* DATA track start LBA (logical block 0) */
fseek(fd, 0, SEEK_SET);
@ -1454,7 +1460,7 @@ void cdd_process(void)
/* no audio track playing */
scd.regs[0x36>>1].byte.h = 0x01;
/* RS1-RS8 ignored, expects 0x0 ("no disc" ?) in RS0 once */
/* RS1-RS8 ignored, expects 0x0 (?) in RS0 once */
scd.regs[0x38>>1].w = 0x0000;
scd.regs[0x3a>>1].w = 0x0000;
scd.regs[0x3c>>1].w = 0x0000;
@ -1546,7 +1552,7 @@ void cdd_process(void)
break;
}
case 0x03: /* Play */
case 0x03: /* Play */
{
/* reset track index */
int index = 0;
@ -1814,7 +1820,7 @@ void cdd_process(void)
/* update status */
cdd.status = cdd.loaded ? CD_STOP : NO_DISC;
/* RS1-RS8 ignored, expects 0x0 ("no disc" ?) in RS0 once */
/* RS1-RS8 ignored, expects 0x0 (?) in RS0 once */
scd.regs[0x38>>1].w = 0x0000;
scd.regs[0x3a>>1].w = 0x0000;
scd.regs[0x3c>>1].w = 0x0000;