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.
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This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:37 EST