5626d28919
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@585 6ac86273-5f31-0410-b378-82cca8765d1b
55 lines
1.5 KiB
NASM
55 lines
1.5 KiB
NASM
;
|
|
; File:
|
|
; rdpcclk.asm
|
|
; Description:
|
|
; read the PC style clock from bios
|
|
;
|
|
; Copyright (c) 1995
|
|
; Pasquale J. Villani
|
|
; All Rights Reserved
|
|
;
|
|
; This file is part of DOS-C.
|
|
;
|
|
; DOS-C 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
|
|
; 2, or (at your option) any later version.
|
|
;
|
|
; DOS-C 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 DOS-C; see the file COPYING. If not,
|
|
; write to the Free Software Foundation, 675 Mass Ave,
|
|
; Cambridge, MA 02139, USA.
|
|
;
|
|
; $Header$
|
|
;
|
|
|
|
%include "../kernel/segs.inc"
|
|
|
|
segment HMA_TEXT
|
|
|
|
;
|
|
; BOOL ReadPCClock(Ticks)
|
|
; ULONG *Ticks;
|
|
;
|
|
global _ReadPCClock
|
|
_ReadPCClock:
|
|
xor ah,ah
|
|
int 1ah
|
|
extern _DaysSinceEpoch ; ; update days if necessary
|
|
|
|
mov ah,0
|
|
|
|
add word [_DaysSinceEpoch ],ax ; *some* BIOS's accumulate several days
|
|
adc word [_DaysSinceEpoch+2],0 ;
|
|
|
|
mov ax,dx ; set return value
|
|
mov dx,cx
|
|
|
|
ret
|
|
|