Incremental Plotter Printout Subroutines

Michael P. Stryker and Phillip J. Best, University of
Michigan, Ann Arbor, Michigan

A group of subroutines providing character-output facilities
for the incremental plotter is presented as a package.
Virtually all the ASCII characters may be printed in any of
8 formats and 63 sizes. One routine sets a control code to
determine the size and orientation of the characters and the
direction the line is to run, another prints out a string of
characters according to this code, a third prints just one
character held in AC 6-11, and a fourth routine prints the
signed decimal equivalent of the contents of the accumulator.

Minimum Hardware:
PDP-8, Type 350 Plotter and

Other Programs Needed:
Digital S-12-U "Incremental
Plotter Subroutine"

Storage Requirement:
Five memory pages (1177

Catalog: November 1969