diff options
Diffstat (limited to 'hw/block/fdc.c')
| -rw-r--r-- | hw/block/fdc.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/hw/block/fdc.c b/hw/block/fdc.c index e89ce2d9a2..e51154b5b7 100644 --- a/hw/block/fdc.c +++ b/hw/block/fdc.c @@ -60,6 +60,12 @@ typedef enum FDriveRate { FDRIVE_RATE_1M = 0x03, /* 1 Mbps */ } FDriveRate; +typedef enum FDriveSize { + FDRIVE_SIZE_UNKNOWN, + FDRIVE_SIZE_350, + FDRIVE_SIZE_525, +} FDriveSize; + typedef struct FDFormat { FloppyDriveType drive; uint8_t last_sect; @@ -68,11 +74,15 @@ typedef struct FDFormat { FDriveRate rate; } FDFormat; +/* In many cases, the total sector size of a format is enough to uniquely + * identify it. However, there are some total sector collisions between + * formats of different physical size, and these are noted below by + * highlighting the total sector size for entries with collisions. */ static const FDFormat fd_formats[] = { /* First entry is default format */ /* 1.44 MB 3"1/2 floppy disks */ - { FLOPPY_DRIVE_TYPE_144, 18, 80, 1, FDRIVE_RATE_500K, }, - { FLOPPY_DRIVE_TYPE_144, 20, 80, 1, FDRIVE_RATE_500K, }, + { FLOPPY_DRIVE_TYPE_144, 18, 80, 1, FDRIVE_RATE_500K, }, /* 3.5" 2880 */ + { FLOPPY_DRIVE_TYPE_144, 20, 80, 1, FDRIVE_RATE_500K, }, /* 3.5" 3200 */ { FLOPPY_DRIVE_TYPE_144, 21, 80, 1, FDRIVE_RATE_500K, }, { FLOPPY_DRIVE_TYPE_144, 21, 82, 1, FDRIVE_RATE_500K, }, { FLOPPY_DRIVE_TYPE_144, 21, 83, 1, FDRIVE_RATE_500K, }, @@ -86,7 +96,7 @@ static const FDFormat fd_formats[] = { { FLOPPY_DRIVE_TYPE_288, 44, 80, 1, FDRIVE_RATE_1M, }, { FLOPPY_DRIVE_TYPE_288, 48, 80, 1, FDRIVE_RATE_1M, }, /* 720 kB 3"1/2 floppy disks */ - { FLOPPY_DRIVE_TYPE_144, 9, 80, 1, FDRIVE_RATE_250K, }, + { FLOPPY_DRIVE_TYPE_144, 9, 80, 1, FDRIVE_RATE_250K, }, /* 3.5" 1440 */ { FLOPPY_DRIVE_TYPE_144, 10, 80, 1, FDRIVE_RATE_250K, }, { FLOPPY_DRIVE_TYPE_144, 10, 82, 1, FDRIVE_RATE_250K, }, { FLOPPY_DRIVE_TYPE_144, 10, 83, 1, FDRIVE_RATE_250K, }, @@ -94,15 +104,15 @@ static const FDFormat fd_formats[] = { { FLOPPY_DRIVE_TYPE_144, 14, 80, 1, FDRIVE_RATE_250K, }, /* 1.2 MB 5"1/4 floppy disks */ { FLOPPY_DRIVE_TYPE_120, 15, 80, 1, FDRIVE_RATE_500K, }, - { FLOPPY_DRIVE_TYPE_120, 18, 80, 1, FDRIVE_RATE_500K, }, + { FLOPPY_DRIVE_TYPE_120, 18, 80, 1, FDRIVE_RATE_500K, }, /* 5.25" 2880 */ { FLOPPY_DRIVE_TYPE_120, 18, 82, 1, FDRIVE_RATE_500K, }, { FLOPPY_DRIVE_TYPE_120, 18, 83, 1, FDRIVE_RATE_500K, }, - { FLOPPY_DRIVE_TYPE_120, 20, 80, 1, FDRIVE_RATE_500K, }, + { FLOPPY_DRIVE_TYPE_120, 20, 80, 1, FDRIVE_RATE_500K, }, /* 5.25" 3200 */ /* 720 kB 5"1/4 floppy disks */ - { FLOPPY_DRIVE_TYPE_120, 9, 80, 1, FDRIVE_RATE_250K, }, + { FLOPPY_DRIVE_TYPE_120, 9, 80, 1, FDRIVE_RATE_250K, }, /* 5.25" 1440 */ { FLOPPY_DRIVE_TYPE_120, 11, 80, 1, FDRIVE_RATE_250K, }, /* 360 kB 5"1/4 floppy disks */ - { FLOPPY_DRIVE_TYPE_120, 9, 40, 1, FDRIVE_RATE_300K, }, + { FLOPPY_DRIVE_TYPE_120, 9, 40, 1, FDRIVE_RATE_300K, }, /* 5.25" 720 */ { FLOPPY_DRIVE_TYPE_120, 9, 40, 0, FDRIVE_RATE_300K, }, { FLOPPY_DRIVE_TYPE_120, 10, 41, 1, FDRIVE_RATE_300K, }, { FLOPPY_DRIVE_TYPE_120, 10, 42, 1, FDRIVE_RATE_300K, }, @@ -110,11 +120,25 @@ static const FDFormat fd_formats[] = { { FLOPPY_DRIVE_TYPE_120, 8, 40, 1, FDRIVE_RATE_250K, }, { FLOPPY_DRIVE_TYPE_120, 8, 40, 0, FDRIVE_RATE_250K, }, /* 360 kB must match 5"1/4 better than 3"1/2... */ - { FLOPPY_DRIVE_TYPE_144, 9, 80, 0, FDRIVE_RATE_250K, }, + { FLOPPY_DRIVE_TYPE_144, 9, 80, 0, FDRIVE_RATE_250K, }, /* 3.5" 720 */ /* end */ { FLOPPY_DRIVE_TYPE_NONE, -1, -1, 0, 0, }, }; +__attribute__((__unused__)) +static FDriveSize drive_size(FloppyDriveType drive) +{ + switch (drive) { + case FLOPPY_DRIVE_TYPE_120: + return FDRIVE_SIZE_525; + case FLOPPY_DRIVE_TYPE_144: + case FLOPPY_DRIVE_TYPE_288: + return FDRIVE_SIZE_350; + default: + return FDRIVE_SIZE_UNKNOWN; + } +} + #define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv) #define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive)) |