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don't check if AH=42h is supported in stage1.

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okuji 2000-01-11 09:33:09 +00:00
parent 68b1a3d231
commit a033c6beb3
2 changed files with 10 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2000-01-11 OKUJI Yoshinori <okuji@gnu.org>
* stage1/stage1.S [!NO_BUGGY_BIOS_IN_THE_WORLD]: Don't check if
LBA read is supported. Anyway, fallback to the CHS mode if
fails.
2000-01-10 OKUJI Yoshinori <okuji@gnu.org>
* stage2/bios.c (NO_INT13_FALLBACK): Undefined.

5
stage1/stage1.S
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@ -1,7 +1,8 @@
/* -*-Asm-*- */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1996 Erich Boleyn <erich@uruk.org>
* Copyright (C) 1999 Free Software Foundation, Inc.
* Copyright (C) 1999,2000 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -148,9 +149,11 @@ real_start:
cmpw $0xaa55, %bx
jne chs_mode
#ifdef NO_BUGGY_BIOS_IN_THE_WORLD
/* check if AH=0x42 is supported */
andw $1, %cx
jz chs_mode
#endif
/* get the geometry (limited to 2TB!) */
movb $0x48, %ah