| Description | Some adapter cards which are designed to be installed in an IBM PC,
PC/XT, PC/AT, or compatible computer require an Interrupt Request (IRQ)
line. These cards usually give the user a narrow selection of IRQ lines
and the accompanying documentation gives little advice on which IRQ line
to use. If you choose the wrong line, it will interfere with the
operation of some other hardware on your system such as the COM ports or
printer ports. This document explains how to use IRQ lines |