SWAP - FOCAL Disk Data Overlay

FOCAL8-110a

James J. Chang, University of California at Berkeley,

Chemistry Department, Berkeley, California

This overlay causes the 8K FOCAL interpreter to use the last

two tracks of a DF32 disk for the storage of variables. The

number of variables which may be used in an 8K system is

changed from over 100 to well over 600 variables. Program

execution time is, however, severely increased.

Minimum Hardware:
8K PDP-8/I, DF32 disk

Other Programs Needed:
FOCAL, 1969 (DEC-08-AJAE-PB)

and utility overlays (DEC-08-

AJ1E-PR)

Restrictions:
Only works with this version of

FOCAL and overlay

Source Language:
PAL, MACRO

Catalog: July 1973

Minimum Hardware:	8K PDP-8/I, DF32 disk
Other Programs Needed:	FOCAL, 1969 (DEC-08-AJAE-PB) and utility overlays (DEC-08- AJ1E-PR)
Restrictions:	Only works with this version of FOCAL and overlay
Source Language:	PAL, MACRO
Catalog:	July 1973