static REG8 hdd_format(SXSIDEV sxsi, long pos) {
FILEH fh;
long r;
UINT16 i;
UINT8 work[256];
UINT size;
UINT wsize;
if (sxsi_prepare(sxsi) != SUCCESS) {
return(0x60);
}
if ((pos < 0) || (pos >= sxsi->totals)) {
return(0x40);
}
pos = pos * sxsi->size + sxsi->headersize;
fh = (FILEH)sxsi->hdl;
r = file_seek(fh, pos, FSEEK_SET);
if (pos != r) {
return(0xd0);
}
FillMemory(work, sizeof(work), 0xe5);
for (i=0; i<sxsi->sectors; i++) {
size = sxsi->size;
while(size) {
wsize = min(size, sizeof(work));
size -= wsize;
CPU_REMCLOCK -= wsize;
if (file_write(fh, work, wsize) != wsize) {
return(0x70);
}
}
}
return(0x00);
}
static REG8 hdd_write(SXSIDEV sxsi, long pos, const UINT8 *buf, UINT size) {
FILEH fh;
long r;
UINT wsize;
if (sxsi_prepare(sxsi) != SUCCESS) {
return(0x60);
}
if ((pos < 0) || (pos >= sxsi->totals)) {
return(0x40);
}
pos = pos * sxsi->size + sxsi->headersize;
fh = (FILEH)sxsi->hdl;
r = file_seek(fh, pos, FSEEK_SET);
if (pos != r) {
return(0xd0);
}
while(size) {
wsize = min(size, sxsi->size);
CPU_REMCLOCK -= wsize;
if (file_write(fh, buf, wsize) != wsize) {
return(0x70);
}
buf += wsize;
size -= wsize;
}
return(0x00);
}
// イメージファイル内全トラックセクタ長2448(2352+96)用
REG8 sec2448_read(SXSIDEV sxsi, long pos, UINT8 *buf, UINT size) {
CDINFO cdinfo;
FILEH fh;
long fpos;
UINT rsize;
if (sxsi_prepare(sxsi) != SUCCESS) {
return(0x60);
}
if ((pos < 0) || (pos >= sxsi->totals)) {
return(0x40);
}
cdinfo = (CDINFO)sxsi->hdl;
fh = cdinfo->fh;
while(size) {
fpos = (pos * 2448) + 16 + cdinfo->trk[0].start_offset;
if (file_seek(fh, fpos, FSEEK_SET) != fpos) {
return(0xd0);
}
rsize = min(size, 2048);
CPU_REMCLOCK -= rsize;
if (file_read(fh, buf, rsize) != rsize) {
return(0xd0);
}
buf += rsize;
size -= rsize;
pos++;
}
return(0x00);
}
static REG8 sec2048_read(SXSIDEV sxsi, long pos, UINT8 *buf, UINT size) {
FILEH fh;
UINT rsize;
if (sxsi_prepare(sxsi) != SUCCESS) {
return(0x60);
}
if ((pos < 0) || (pos >= sxsi->totals)) {
return(0x40);
}
pos = pos * 2048;
fh = ((CDINFO)sxsi->hdl)->fh;
if (file_seek(fh, pos, FSEEK_SET) != pos) {
return(0xd0);
}
while(size) {
rsize = min(size, 2048);
CPU_REMCLOCK -= rsize;
if (file_read(fh, buf, rsize) != rsize) {
return(0xd0);
}
buf += rsize;
size -= rsize;
}
return(0x00);
}
// イメージファイル内セクタ長混在用
// 非RAW(2048byte)＋Audio(2352byte)等
REG8 sec_read(SXSIDEV sxsi, long pos, UINT8 *buf, UINT size) {
CDINFO cdinfo;
FILEH fh;
long fpos;
UINT rsize;
UINT i;
UINT32 secs;
if (sxsi_prepare(sxsi) != SUCCESS) {
return(0x60);
}
if ((pos < 0) || (pos >= sxsi->totals)) {
return(0x40);
}
cdinfo = (CDINFO)sxsi->hdl;
fh = cdinfo->fh;
while (size) {
fpos = 0;
secs = 0;
for (i = 0; i < cdinfo->trks; i++) {
if (cdinfo->trk[i].str_sec <= pos && pos <= cdinfo->trk[i].end_sec) {
fpos += (pos - secs) * cdinfo->trk[i].sector_size;
if (cdinfo->trk[i].sector_size != 2048) {
fpos += 16;
}
break;
}
fpos += cdinfo->trk[i].sectors * cdinfo->trk[i].sector_size;
secs += cdinfo->trk[i].sectors;
}
fpos += cdinfo->trk[0].start_offset;
if (file_seek(fh, fpos, FSEEK_SET) != fpos) {
return(0xd0);
}
rsize = min(size, 2048);
CPU_REMCLOCK -= rsize;
if (file_read(fh, buf, rsize) != rsize) {
return(0xd0);
}
buf += rsize;
size -= rsize;
pos++;
}
return(0x00);
}
BRESULT sxsicd_readraw(SXSIDEV sxsi, long pos, void *buf) {
CDINFO cdinfo;
FILEH fh;
long fpos;
cdinfo = (CDINFO)sxsi->hdl;
if (cdinfo->type != 2352) {
return(FAILURE);
}
if (sxsi_prepare(sxsi) != SUCCESS) {
return(FAILURE);
}
if ((pos < 0) || (pos >= sxsi->totals)) {
return(FAILURE);
}
fh = ((CDINFO)sxsi->hdl)->fh;
fpos = pos * 2352;
if ((file_seek(fh, fpos, FSEEK_SET) != fpos) ||
(file_read(fh, buf, 2352) != 2352)) {
return(FAILURE);
}
return(SUCCESS);
}
