Paul Hammond, Woods Hole Oceanographic Institution,

Woods Hole, Massachusetts

The Octal Memory Dump on Teletype is a DEC routine

(DEC-5-8-U) which dumps memory by reading the switch

register twice; once for a lower limit and again for an upper

limit. It then types an address, the contents of the program

and the next three locations, issues a CR/LF, then repeats

the process for the next four locations. This leaves the

right two-thirds of the Teletype page unused. The 78₁₀

instructions occupy two pages.

This revised routine uses the complete width of the Teletype

page and occupies only one memory page, using less paper

and two less instructions. Now an address and the contents

of 15 locations are typed out before a carriage return.