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| author | H. Peter Anvin <hpa@zytor.com> | 2007-12-18 14:28:13 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2007-12-18 14:28:13 -0800 |
| commit | cbcc195e1ac4d7b4f4c3a37b51fa3c58db14269b (patch) | |
| tree | 91bf06851549a17e9458a5fccae5c3b63106748f | |
| parent | 019632dea32d93a070596ee796fb33fbf83cd6f6 (diff) | |
| download | syslinux-elf-cbcc195e1ac4d7b4f4c3a37b51fa3c58db14269b.tar.gz syslinux-elf-cbcc195e1ac4d7b4f4c3a37b51fa3c58db14269b.tar.xz syslinux-elf-cbcc195e1ac4d7b4f4c3a37b51fa3c58db14269b.zip | |
Higher confidence in the harmlessness of the ADV codesyslinux-3.60-pre5
Make more sure that the ADV code is harmless when the current
derivative doesn't support it.
| -rw-r--r-- | adv.inc | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -298,11 +298,15 @@ adv_write: je .bad cmp dword [ADVSec1],0 je .bad + cmp byte [ADVDrive],-1 + je .bad + push ax call adv_cleanup mov ah,3 ; Write call adv_read_write pop ax + clc ret .bad: ; No location for ADV set @@ -470,12 +474,12 @@ adv_read_write: section .data align 4, db 0 +ADVSec0 db 0 ; Undefined +ADVSec1 db 0 ; Undefined ADVDrive db -1 ; No ADV defined section .bss alignb 4 -ADVSec0 resd 1 -ADVSec1 resd 1 ADVSecPerTrack resw 1 ADVHeads resw 1 ADVOp resb 1 |