; (C) Copyright MICROSOFT Corp., 1991
;
; Author: Neil Sandlin
;
name sample
;
;
include itimer.inc
_TEXT segment word public 'CODE'
assume cs:_TEXT,ds:_DATA
sample proc far
mov ax, _DATA
mov ds, ax
mov es, ax
mov ax, 1600h ; check for enhanced windows
int 2fh ; hello windows?
test al, 7fh ; significant bits
jnz short running_enhanced ; ok
jmp sample_exit
running_enhanced:
;-----------------------------------------------------------------------
; set up interval timer
;-----------------------------------------------------------------------
mov si, offset Count ; point to count
mov dx, ITIMER_COUNT ; count register
mov cx, 4 ; 4 bytes to process
sc_loop:
lodsb ; get byte into al
out dx, al ; send it on out
loop sc_loop ; do it again
mov al, ITIMER_RUNNING OR ITIMER_NO_RUPT
mov dx, ITIMER_STATE
out dx, al ; start timer
sample_exit:
mov ax, 4C00h ; exit
int 21h ;
sample endp
_TEXT ends
;*------------------------------- Data ---------------------------------*
_DATA segment word public 'DATA'
Count dd 2000h
_DATA ends
end sample
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