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FDC changes :

Browse source 
- Seperated disk and disk drive emulation
- Support more drive types - 5.25" dual RPM, 3.5" DD, 3.5" HD, 3.5" HD 3-Mode
- Support drive swapping (FDC37c665 only)
- Support FDC FIFO
- Support other FDC 'enhanced mode' behaviour
- Support IBM XDF format images
- Formatting now formats both tracks, and uses correct 'fill' byte
- Various other improvements

Many of these changes provided by Battler
This commit is contained in:
TomW 2015-12-12 16:31:08 +00:00
commit eebdc165b2
16 changed files with 1530 additions and 340 deletions
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26
src/disc_fdi.c
View file

@ -22,7 +22,7 @@ static uint8_t fdi_timing[256*1024];
static int fdi_pos;
static int fdi_revs;
static int fdi_sector, fdi_track, fdi_side, fdi_drive, fdi_density;
static int fdi_sector, fdi_track, fdi_side, fdi_drive, fdi_density, fdi_n;
static int fdi_inread, fdi_inwrite, fdi_readpos, fdi_inreadaddr;
static uint16_t CRCTable[256];
@ -62,6 +62,19 @@ void fdi_init()
fdi_setupcrc(0x1021, 0xcdb4);
}
int fdi_hole(int drive)
{
switch (fdi2raw_get_bit_rate(fdi[drive].h))
{
case 1000:
return 2;
case 500:
return 1;
default:
return 0;
}
}
void fdi_load(int drive, char *fn)
{
writeprot[drive] = fwriteprot[drive] = 1;
@ -76,6 +89,7 @@ void fdi_load(int drive, char *fn)
drives[drive].readsector = fdi_readsector;
drives[drive].writesector = fdi_writesector;
drives[drive].readaddress = fdi_readaddress;
drives[drive].hole = fdi_hole;
drives[drive].poll = fdi_poll;
drives[drive].format = fdi_format;
drives[drive].stop = fdi_stop;
@ -137,12 +151,13 @@ void fdi_writeback(int drive, int track)
return;
}
void fdi_readsector(int drive, int sector, int track, int side, int rate)
void fdi_readsector(int drive, int sector, int track, int side, int rate, int sector_size)
{
fdi_revs = 0;
fdi_sector = sector;
fdi_track = track;
fdi_side = side;
fdi_n = sector_size;
fdi_drive = drive;
if (rate == 2)
fdi_density = 1;
@ -161,12 +176,13 @@ void fdi_readsector(int drive, int sector, int track, int side, int rate)
fdi_readpos = 0;
}
void fdi_writesector(int drive, int sector, int track, int side, int rate)
void fdi_writesector(int drive, int sector, int track, int side, int rate, int sector_size)
{
fdi_revs = 0;
fdi_sector = sector;
fdi_track = track;
fdi_side = side;
fdi_n = sector_size;
fdi_drive = drive;
if (rate == 2)
fdi_density = 1;
@ -202,7 +218,7 @@ void fdi_readaddress(int drive, int track, int side, int rate)
fdi_readpos = 0;
}
void fdi_format(int drive, int track, int side, int rate)
void fdi_format(int drive, int track, int side, int rate, uint8_t fill)
{
fdi_revs = 0;
fdi_track = track;
@ -324,7 +340,7 @@ void fdi_poll()
if (!pollbytesleft)
{
// pclog("Header over %i,%i %i,%i\n", fdi_sectordat[0], fdi_sectordat[2], fdi_track, fdi_sector);
if ((fdi_sectordat[0] == fdi_track && (fdi_sectordat[2] == fdi_sector || fdi_sector == SECTOR_NEXT)) || fdi_inreadaddr)
if ((fdi_sectordat[0] == fdi_track && (fdi_sectordat[3] == fdi_n) && (fdi_sectordat[2] == fdi_sector || fdi_sector == SECTOR_NEXT)) || fdi_inreadaddr)
{
crc = (fdi_density) ? 0xcdb4 : 0xffff;
calccrc(0xFE);