Author: J. S. B. Clark, Poultry Research Centre, Edinburgh, Scotland

The limited instruction set of the PDP-8/L can cause program inefficiency. A modification is described which allows the redundant micro-instruction RAR RAL to be used as a control command. An example of its use in enabling another modified command under program control is given.

Hardware Required: PDP-8/L or PDP-8/I (unverified)

Source Language: PAL III, PAL-D

Restrictions: Involves a hardware modification

Catalog: June 1976