Backport Imlac games to PDS-1

PDP-10 / its

Incompatible Timesharing System

Other

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Backport Imlac games to PDS-1 #1876

Open larsbrinkhoff opened 4 years ago

larsbrinkhoff commented 4 years ago

The games CRASH, PONG, and SWAR have been modified to run on the PDS-4.

If possible, use @tuban's files as a guide to update source code to run on PDS-1 again.
http://www.ubanproductions.com/Imlac/crashmit
http://www.ubanproductions.com/Imlac/pong
http://www.ubanproductions.com/Imlac/war (or some of the others)

larsbrinkhoff commented 4 years ago

CRASH shows promise with these simple changes:

Set PDS4=0
Set MAXADDR=17777
Comment out DISFIX
Change LOC from 30000 to 10000
Set start address to 101

The other two doesn't do as well.

larsbrinkhoff commented 4 years ago

By the way, how to load a program on top of SSV:

Have it begin at 10000
Type :IMLOAD PROGRAM
Type Control-Shift-TAB to start bootstrap loader
Program loads
If start address is 101 it comes back to SSV; type Control-Shift-ESC

larsbrinkhoff commented 4 years ago

I heard @dlebling618 ported Spacewar to the Imlac as an exercise to get to know the machine. I wonder if the source code here is an ancestor of that version?

https://github.com/PDP-10/its/blob/master/src/imsrc/swar.8

The title "CHAR SET 2" is a bit strange.