Pascal System

From: Allison J Parent <allisonp_at_world.std.com>
Date: Wed Feb 25 22:56:05 1998

<The UCSD p system used a nonstandard disk format technique, the floppy
<was formatted in "blocks" and you booted the systeem off the a drive.
<It wasn't just a language, but an entire operating system/environment.
<I still have a copy of it around here somewhere from a class I took in
<the early 80's.

This was largely true for the z80based and PDP-11 based versions as well.
I still have the P-system for horizon single density.

The language addressed "units" as devices. The standard ones:

unit volume
--------------
 1 console:
 2 systerm:
 3 graphic:
 4 <volume name> system disk
 5 <volume name> alternate disk
 6 printer
 8 REMOTE: system peripherals
 9-12 <VOLUME NAME> ADDITIONAL DRIVES

Now if the code for the system interface didn't go beyond 2 floppy
devices your cooked as that was a p-system hard coded thing.

Allison
Received on Wed Feb 25 1998 - 22:56:05 GMT

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