blob: 7cb3f4b7b13b0ceec9974acde9be8cbce7985fee (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
# RCC-Project
#
# Copyright (C) 2026 Richard Qin
#
# This file is part of RCC-Project.
#
# RCC-Project is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3 of the License, or (at your option) any
# later version.
#
# RCC-Project is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# RCC-Project; see the file COPYING. If not see
# <http://www.gnu.org/licenses/>.
.intel_syntax noprefix
.code16
.section .text16.irq, "ax"
.global int1a_entry
.type int1a_entry, @function
int1a_entry:
cmp ah, 0x00
jne int1a_return
push ds
push bx
xor bx, bx
mov ds, bx
mov bx, 0x046C
mov cx, word ptr [bx + 2]
mov dx, word ptr [bx]
mov al, byte ptr [0x0470]
mov byte ptr [0x0470], 0
mov ah, 0x00
pop bx
pop ds
int1a_return:
iret
|
