File:
[RetroPC.NET] /
np2 /
romimage /
BIOS /
vect09.x86
Revision
1.3:
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Sat Apr 3 04:31:27 2004 JST (21 years, 6 months ago) by
yui
Branches:
MAIN
CVS tags:
VER_0_82_x64,
VER_0_82,
VER_0_81A,
VER_0_81,
VER_0_80,
VER_0_79,
VER_0_78,
VER_0_77,
VER_0_76,
HEAD
fix protect bios (T.Yui)
vect09: sti
push ax
push ds
xor ax, ax
mov ds, ax
in al, 0x43
test al, 0x38
jne short .err
.force: mov al, 0x16
out 0x43, al
mov byte [0x0529], 0
in al, 0x41
mov ah, al
call bios09
.eoi: pop ds
cli
mov al, 0x20
out 0x00, al
cmp ah, 0x60
je short .int6
cmp ah, 0x61
je short .int5
pop ax
iret
.err: cmp byte [0x0529], 3
jae short .force
inc byte [0x0529]
mov al, 0x14
out 0x43, al
in al, 0x41
jmp short .eoi
.int5: pop ax
int 0x05
iret
.int6: pop ax
int 0x06
iret
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