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1988
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01
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whetlin
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time18i.asm
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Assembly Source File
|
1986-11-22
|
804b
|
42 lines
; Author: M. Steven Baker
; Date: July 29, 1986
;
; long time18(0) -- returns timer counter in 18.2 counts/second
; long time18(long * loc) -- also stores timer count in loc
;
; Version of Time() for Intel Fortran to emulate UNIX time()
; returns timer interrupt count from BIOS data area
; count = 18.2 ticks per second
; this version set up for Intel Fortran-86
;
DATA segment at 40h
org 6ch
timer_low label word
org 6eh
timer_high label word
DATA ends
SUBPRG_CODE SEGMENT
;
public TIME18
assume cs:SUBPRG_CODE,ds:DATA
;
TIME18 proc far
push ds ;save DS
mov ax,40h ;point to ROM BIOS area
mov ds,ax
cli ;shut off interrupts
mov ax,timer_low ;timer_low
mov dx,timer_high ;timer_high
sti
pop ds
ret
TIME18 endp
SUBPRG_CODE ends
end