diff options
| -rw-r--r-- | core/diskstart.inc | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/core/diskstart.inc b/core/diskstart.inc index 40330dd5..4f15ad27 100644 --- a/core/diskstart.inc +++ b/core/diskstart.inc @@ -159,12 +159,13 @@ floppy: fs rep movsw ; Faster to move words mov cl,[bsSecPerTrack] ; Patch the sector count mov [di-76+8],cl - int 13h ; Some BIOSes need this - push cx ; Partition offset == 0 - push cx - push cx - push cx + push ax ; Partition offset == 0 + push ax + push ax + push ax + + int 13h ; Some BIOSes need this jmp short not_harddisk ; ; The drive number and possibly partition information was passed to us @@ -326,9 +327,8 @@ getonesec_cbios: ; eax = track # div edi ; Convert track to head/cyl - ; We should test this, but it doesn't fit... - ; cmp eax,1023 - ; ja .error + cmp eax,1023 ; Outside the CHS range? + ja kaboom ; ; Now we have AX = cyl, DX = head, CX = sector (0-based), @@ -343,11 +343,11 @@ getonesec_cbios: mov dh,dl mov ax,0201h ; Read one sector call xint13 + popad jc .error ret .error: - popad loop .retry ; Fall through to disk_error @@ -699,9 +699,8 @@ getlinsec_cbios: ; eax = track # div edi ; Convert track to head/cyl - ; We should test this, but it doesn't fit... - ; cmp eax,1023 - ; ja .error + cmp eax,1023 ; Outside the CHS range? + ja kaboom ; ; Now we have AX = cyl, DX = head, CX = sector (0-based), |