timer.asm

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; This sample shows the
; use of a timer function
; (INT 15h / 86h)
; This code prints some chars
; with 1 second delay.

#make_COM#

ORG     100h

; set the segment register,
; just in case:
MOV     AX, CS
MOV     DS, AX

next_char:

CMP     count, 0
JZ      stop

; print char:
MOV     AL, c1
MOV     AH, 0Eh
INT     10h

; next ascii char:
INC     c1
DEC     count

; set interval (1 million
; microseconds - 1 second):
MOV     CX, 0Fh
MOV     DX, 4240h
MOV     AH, 86h
INT     15h

; stop any error:
JC      stop    

JMP     next_char

stop:
RET

count   DB      10
c1      DB      'A'

END