Category : Assembly Language Source Code
Archive   : ASM-SUBR.ZIP
Filename : STDOUTDR

;-------------------------routine begins--------------------------+
; ROUTINE FOR DIRECT CONSOLE OUTPUT
;
; FUNCTION: This routine sends individual out the standard output
; device using direct output.
; INPUT: Upon entry an ASII char is in AL.
; OUTPUT: A single character is output through the direct standard
; output.
; REGISTERS USED: AH is modified. AL is used for input.
; SEGMENTS REFERENCED: None
; ROUTINES CALLED: DOS call number 6 (direct console I/O) is used.
; SPECIAL NOTES: None
;
stdoutdr proc far
push dx ; save registers
;
cmp al,0FFh ; check for the one case of input.
je stdoutdrexit
mov dl,al ; in DL for DOS call
mov ah,6 ; direct console input
int 21h ; DOS call
;
stdoutdrexit:
pop dx ; restore registers
ret ; return
stdoutdr endp
;-------------------------routine ends---------------------------+