source: xtideuniversalbios/trunk/Assembly_Library/Src/Util/Reboot.asm@ 322

Last change on this file since 322 was 251, checked in by krille_n_@…, 13 years ago

Changes:

  • Simplified the bug fix I did in r242.
  • Fixed a couple of new bugs in Reboot.asm
File size: 1.4 KB
Line 
1; Project name : Assembly Library
2; Description : Functions for rebooting computer.
3
4; Section containing code
5SECTION .text
6
7;--------------------------------------------------------------------
8; Reboot_ComputerWithBootFlagInAX
9; Parameters:
10; AX: Boot Flag
11; Returns:
12; Nothing, function never returns
13;--------------------------------------------------------------------
14Reboot_ComputerWithBootFlagInAX:
15 LOAD_BDA_SEGMENT_TO ds, bx
16 mov [BDA.wBoot], ax ; Store boot flag
17 ; Fall to Reboot_AT
18
19
20;--------------------------------------------------------------------
21; Reboot_AT
22; Parameters:
23; Nothing
24; Returns:
25; Nothing, function never returns
26;--------------------------------------------------------------------
27Reboot_AT:
28 mov al, 0FEh ; System reset (AT+ keyboard controller)
29 out 64h, al ; Reset computer (AT+)
30%ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
31 mov ax, 10
32 call Delay_MicrosecondsFromAX
33%else
34 JMP_DELAY
35%endif
36 ; Fall to Reboot_XT
37
38
39;--------------------------------------------------------------------
40; Reboot_XT
41; Parameters:
42; Nothing
43; Returns:
44; Nothing, function never returns
45;--------------------------------------------------------------------
46Reboot_XT:
47 xor ax, ax
48 push ax
49 popf ; Clear FLAGS (disables interrupt)
50 mov ds, ax
51 mov es, ax
52 mov ss, ax
53 jmp 0FFFFh:0 ; XT reset
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