From: Andrew Kirilenko <icedank@gmx.net>
To: linux-kernel@vger.kernel.org
Subject: Searching for string problems
Date: Wed, 23 Apr 2003 19:58:43 +0300 [thread overview]
Message-ID: <200304231958.43235.icedank@gmx.net> (raw)
Hello!
OK. I've solved my problems with storing data (problem was with improper DS
setup - thanks to all, pointed me to this). And now I should perform a search
in the BIOS are for particular string (version of BIOS ). Here is my code
(it's located in the setup.S, so executes in the real mode, not ptotected).
-->
start_of_setup:
jmp cl_start
cl_id_str: .string "BIOS 0.1"
cl_start:
movb $0, %al
movw $0xe000, %bx
cl_compare:
incw %bx
movw %bx, %si
cmpw $0xefff, %si
je cl_compare_done
movw $cl_id_str, %di
cl_compare_inner:
movb (%di), %ah
cmpb $0, %ah
je cl_compare_done_good
cmpb (%si), %ah
jne cl_compare
incw %si
incw %di
jmp cl_compare_inner
cl_compare_done_good:
movb $1, %al
cl_compare_done:
<--
This code don't work... I'm sure, that's because of inproper registers setup
(or maybe address range is wrong). Please help me.
Best regards,
Andrew.
next reply other threads:[~2003-04-23 16:46 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-23 16:58 Andrew Kirilenko [this message]
2003-04-23 17:39 ` Searching for string problems Richard B. Johnson
2003-04-23 18:05 ` Andrew Kirilenko
2003-04-23 18:15 ` Richard B. Johnson
2003-04-23 18:25 ` Andrew Kirilenko
2003-04-23 18:56 ` Richard B. Johnson
2003-04-23 19:00 ` Andrew Kirilenko
2003-04-23 19:11 ` Randy.Dunlap
2003-04-23 19:37 ` Richard B. Johnson
2003-04-23 19:48 ` Andrew Kirilenko
2003-04-23 20:05 ` Randy.Dunlap
2003-04-23 20:05 ` Richard B. Johnson
2003-04-23 20:12 ` Andrew Kirilenko
2003-04-23 18:59 ` Randy.Dunlap
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