en:docs:dos:api:int21:04

Note: This API call is for DOS personality only. Use Family API for portability.

2018/09/07 07:04 · prokushev

Int 21H, AH=04H

Version

1 and higher

Brief

WRITE CHARACTER TO STDAUX

Family API

Input

AH = 04h
DL = character to write

Return

nothing

Notes

keyboard checked for ^C/^Break, and INT 23 executed if detected

STDAUX is usually the first serial port

if STDAUX is busy, this function will wait until it becomes free

See also

AH=03h,INT 14/AH=01h,INT E0/CL=04h

Note


en/docs/dos/api/int21/04.txt · Last modified: 2020/12/07 05:05 by prokushev