Category: serial I/O
INT 14 - MultiDOS Plus IODRV - GET PORT STATUS AH = 07h Return: CL = modem status (see #00305) CH = character at head of input queue (if any) DX = number of characters in input queue Note: the port number is stored at offset BEh in the Task Control Block SeeAlso: AH=03h,AH=05h"MultiDOS",AH=08h"MultiDOS",AH=09h"MultiDOS" SeeAlso: AH=23h"MultiDOS",INT 15/AH=13h"MultiDOS"