ed2036e139
git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@484 6ac86273-5f31-0410-b378-82cca8765d1b
64 lines
1.9 KiB
NASM
64 lines
1.9 KiB
NASM
;
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; File:
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; wratclk.asm
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; Description:
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; WriteATClock - sysclock support
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;
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; Copyright (c) 1995
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; Pasquale J. Villani
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; All Rights Reserved
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;
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; This file is part of DOS-C.
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;
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; DOS-C is free software; you can redistribute it and/or
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; modify it under the terms of the GNU General Public License
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; as published by the Free Software Foundation; either version
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; 2, or (at your option) any later version.
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;
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; DOS-C is distributed in the hope that it will be useful, but
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; WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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; the GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public
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; License along with DOS-C; see the file COPYING. If not,
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; write to the Free Software Foundation, 675 Mass Ave,
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; Cambridge, MA 02139, USA.
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;
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; $Header$
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;
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%include "..\kernel\segs.inc"
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segment HMA_TEXT
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;
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; VOID WriteATClock(bcdDays, bcdHours, bcdMinutes, bcdSeconds)
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; BYTE *bcdDays;
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; BYTE bcdHours;
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; BYTE bcdMinutes;
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; BYTE bcdSeconds;
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;
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global _WriteATClock
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_WriteATClock:
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push bp
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mov bp,sp
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; bcdSeconds = 10
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; bcdMinutes = 8
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; bcdHours = 6
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; bcdDays = 4
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mov ch,byte [bp+6] ;bcdHours
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mov cl,byte [bp+8] ;bcdMinutes
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mov dh,byte [bp+10] ;bcdSeconds
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mov dl,0
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mov ah,3
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int 1ah
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mov bx,word [bp+4] ;bcdDays
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mov dx,word [bx]
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mov cx,word [bx+2]
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mov ah,5
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int 1ah
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pop bp
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ret
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