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Diffstat (limited to 'hw/fdc.c')
-rw-r--r--hw/fdc.c114
1 files changed, 6 insertions, 108 deletions
diff --git a/hw/fdc.c b/hw/fdc.c
index 4bbcc4715f..5874a666eb 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -63,21 +63,6 @@
#define FD_RESET_SENSEI_COUNT 4 /* Number of sense interrupts on RESET */
/* Floppy disk drive emulation */
-typedef enum FDiskType {
- FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */
- FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */
- FDRIVE_DISK_720 = 0x03, /* 720 kB disk */
- FDRIVE_DISK_USER = 0x04, /* User defined geometry */
- FDRIVE_DISK_NONE = 0x05, /* No disk */
-} FDiskType;
-
-typedef enum FDriveType {
- FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */
- FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */
- FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */
- FDRIVE_DRV_NONE = 0x03, /* No drive connected */
-} FDriveType;
-
typedef enum FDiskFlags {
FDISK_DBL_SIDES = 0x01,
} FDiskFlags;
@@ -178,111 +163,23 @@ static void fd_recalibrate(FDrive *drv)
drv->sect = 1;
}
-/* Recognize floppy formats */
-typedef struct FDFormat {
- FDriveType drive;
- FDiskType disk;
- uint8_t last_sect;
- uint8_t max_track;
- uint8_t max_head;
- const char *str;
-} FDFormat;
-
-static const FDFormat fd_formats[] = {
- /* First entry is default format */
- /* 1.44 MB 3"1/2 floppy disks */
- { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, "1.44 MB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, "1.6 MB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, "1.68 MB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, "1.72 MB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, "1.74 MB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, "1.76 MB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, "1.84 MB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, "1.92 MB 3\"1/2", },
- /* 2.88 MB 3"1/2 floppy disks */
- { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, "2.88 MB 3\"1/2", },
- { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, "3.12 MB 3\"1/2", },
- { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, "3.2 MB 3\"1/2", },
- { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, "3.52 MB 3\"1/2", },
- { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, "3.84 MB 3\"1/2", },
- /* 720 kB 3"1/2 floppy disks */
- { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, "720 kB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, "800 kB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, "820 kB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, "830 kB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, "1.04 MB 3\"1/2", },
- { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, "1.12 MB 3\"1/2", },
- /* 1.2 MB 5"1/4 floppy disks */
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, "1.2 kB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, "1.44 MB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, "1.48 MB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, "1.49 MB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, "1.6 MB 5\"1/4", },
- /* 720 kB 5"1/4 floppy disks */
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, "720 kB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, "880 kB 5\"1/4", },
- /* 360 kB 5"1/4 floppy disks */
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, "360 kB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, "180 kB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, "410 kB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, "420 kB 5\"1/4", },
- /* 320 kB 5"1/4 floppy disks */
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, "320 kB 5\"1/4", },
- { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, "160 kB 5\"1/4", },
- /* 360 kB must match 5"1/4 better than 3"1/2... */
- { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 0, "360 kB 3\"1/2", },
- /* end */
- { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, },
-};
-
/* Revalidate a disk drive after a disk change */
static void fd_revalidate(FDrive *drv)
{
- const FDFormat *parse;
- uint64_t nb_sectors, size;
- int i, first_match, match;
int nb_heads, max_track, last_sect, ro;
+ FDriveType drive;
FLOPPY_DPRINTF("revalidate\n");
if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) {
ro = bdrv_is_read_only(drv->bs);
- bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect);
+ bdrv_get_floppy_geometry_hint(drv->bs, &nb_heads, &max_track,
+ &last_sect, drv->drive, &drive);
if (nb_heads != 0 && max_track != 0 && last_sect != 0) {
FLOPPY_DPRINTF("User defined disk (%d %d %d)",
nb_heads - 1, max_track, last_sect);
} else {
- bdrv_get_geometry(drv->bs, &nb_sectors);
- match = -1;
- first_match = -1;
- for (i = 0;; i++) {
- parse = &fd_formats[i];
- if (parse->drive == FDRIVE_DRV_NONE)
- break;
- if (drv->drive == parse->drive ||
- drv->drive == FDRIVE_DRV_NONE) {
- size = (parse->max_head + 1) * parse->max_track *
- parse->last_sect;
- if (nb_sectors == size) {
- match = i;
- break;
- }
- if (first_match == -1)
- first_match = i;
- }
- }
- if (match == -1) {
- if (first_match == -1)
- match = 1;
- else
- match = first_match;
- parse = &fd_formats[match];
- }
- nb_heads = parse->max_head + 1;
- max_track = parse->max_track;
- last_sect = parse->last_sect;
- drv->drive = parse->drive;
- FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
- nb_heads, max_track, last_sect, ro ? "ro" : "rw");
+ FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads,
+ max_track, last_sect, ro ? "ro" : "rw");
}
if (nb_heads == 1) {
drv->flags &= ~FDISK_DBL_SIDES;
@@ -292,6 +189,7 @@ static void fd_revalidate(FDrive *drv)
drv->max_track = max_track;
drv->last_sect = last_sect;
drv->ro = ro;
+ drv->drive = drive;
} else {
FLOPPY_DPRINTF("No disk in drive\n");
drv->last_sect = 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 16:14:42 +0000