The regs->ch field contains the cylinder to format on a disk_1305 call. Verify that parameter and pass to the low-level driver code.
Signed-off-by: Kevin O'Connor kevin@koconnor.net --- src/disk.c | 13 +++++++------ src/hw/floppy.c | 4 ++-- 2 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/src/disk.c b/src/disk.c index 1011b39..4421d9d 100644 --- a/src/disk.c +++ b/src/disk.c @@ -186,12 +186,13 @@ disk_1305(struct bregs *regs, struct drive_s *drive_gf) debug_stub(regs);
struct chs_s chs = getLCHS(drive_gf); - u16 nlh=chs.head, nls=chs.sector; + u16 nlc=chs.cylinder, nlh=chs.head, nls=chs.sector;
- u8 num_sectors = regs->al; - u8 head = regs->dh; + u8 count = regs->al; + u8 cylinder = regs->ch; + u8 head = regs->dh;
- if (head >= nlh || num_sectors == 0 || num_sectors > nls) { + if (cylinder >= nlc || head >= nlh || count == 0 || count > nls) { disk_ret(regs, DISK_RET_EPARAM); return; } @@ -199,8 +200,8 @@ disk_1305(struct bregs *regs, struct drive_s *drive_gf) struct disk_op_s dop; dop.drive_gf = drive_gf; dop.command = CMD_FORMAT; - dop.lba = head; - dop.count = num_sectors; + dop.lba = (((u32)cylinder * (u32)nlh) + (u32)head) * (u32)nls; + dop.count = count; dop.buf_fl = MAKE_FLATPTR(regs->es, regs->bx); int status = send_disk_op(&dop); disk_ret(regs, status); diff --git a/src/hw/floppy.c b/src/hw/floppy.c index 7d38b12..d01f354 100644 --- a/src/hw/floppy.c +++ b/src/hw/floppy.c @@ -604,12 +604,12 @@ fail: static int floppy_format(struct disk_op_s *op) { - u8 head = op->lba; + struct chs_s chs = lba2chs(op);
// send format-track command to controller u8 floppyid = GET_GLOBALFLAT(op->drive_gf->cntl_id); u8 param[7]; - param[0] = (head << 2) | floppyid; // HD DR1 DR2 + param[0] = (chs.head << 2) | floppyid; // HD DR1 DR2 param[1] = FLOPPY_SIZE_CODE; param[2] = op->count; // number of sectors per track param[3] = FLOPPY_FORMAT_GAPLEN;
-
Kevin O'Connor