INT 14 - COURIERS.COM - SEND BREAK AH = 8Ah Return: nothing SeeAlso: AH=89h"COURIERS",AH=FAh
INT 14 - COMM-DRV v14.0 - TURN OFF RTS AH = 8Ah 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"