diff options
| author | hpa <hpa> | 2004-01-24 21:12:20 +0000 |
|---|---|---|
| committer | hpa <hpa> | 2004-01-24 21:12:20 +0000 |
| commit | 0b52217d645e3457194d2514f3f52da8c90f6e4b (patch) | |
| tree | 16912460b8d96314527a24a8ca7a1299649672a4 /memdisk/memdisk.asm | |
| parent | 834e9d5623967dfa7c04b573a72901e24e484ffd (diff) | |
| download | syslinux-0b52217d645e3457194d2514f3f52da8c90f6e4b.tar.gz | |
Fail if C/H/S geometry is wrong. This is necessary for things that probe
for geometry.
Diffstat (limited to 'memdisk/memdisk.asm')
| -rw-r--r-- | memdisk/memdisk.asm | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/memdisk/memdisk.asm b/memdisk/memdisk.asm index 1f18ae79..053fa41d 100644 --- a/memdisk/memdisk.asm +++ b/memdisk/memdisk.asm @@ -308,8 +308,12 @@ setup_regs: movzx ebx,cl ; Sector number and bl,3Fh dec ebx ; Sector number is 1-based + cmp bx,[Sectors] + jae .overrun movzx edi,P_DH ; Head number movzx eax,word [Heads] + cmp di,ax + jae .overrun shr cl,6 xchg cl,ch ; Now (E)CX <- cylinder number mul ecx ; eax <- Heads*cyl# (edx <- 0) |