Clear I/O channels
Function AddressVectorDescription
CLRCHN FFCC0322Clear I/O channels

This routine is called to clear all open channels and restore the I/O channels to their original default values.

It is usually called after opening other I/O channels like a tape or disk drive and using them for input/output operations. The default input device is 0 (keyboard). The default output device is 3 (screen).

This routine is automatically called when the CLALL routine is executed.

Last modified October 19, 2021: Add Kernal vectors to call pages (6866932)