INT 14 - COURIERS.COM - OUTPUT STATUS AH = 87h Return: AX = number of unsent characters SeeAlso: AH=88h"COURIERS"
INT 14 - COMM-DRV v14.0 - TURN ON DTR AH = 87h DX = port number Return: AH bit 7 set on error AH bit 7 clear if successful SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"