README file for Rons Tape Demo
Sunday December 27, 2015
Author Stan Paddock

Tape Demo is a demonstration program run on the IBM 1401 computer.

The IBM 1401 uses tapes to store large amounts of data.
When processing that data, the each active tape drive would randomly be selected and read or write data.

This program makes the tape drives appear to be working very hard.
The program supports the use of one, two, three or four tape drives.
When a tape drive is selected, 100 records are written to the drive.

The program uses the IBM 1401 sense switches to control the actions of the program.
SENSE SWITCH A  = (NOT USED)
SENSE SWITCH B  = TAPE DRIVE  1 ONLY
SENSE SWITCH C  = TAPE DRIVES 1 & 2   
SENSE SWITCH BC = TAPE DRIVES 1 & 2 & 3  
SENSE SWITCH D  = TAPE DRIVES 1 & 2 & 3 & 4
SENSE SWITCH E  = REWIND AFTER EACH MINOR LOOP
SENSE SWITCH F  = TERMINATE PROGRAM  
SENSE SWITCH G  = RERUN PROGRAM FROM START  
     
The program will terminate with a halt.
If you want to run it again, set sense switch G on, and press start.

If you don’t want to run it again, leave sense switch G off and when you press start, it will look for and read in the next program.