[TUHS] How to do differential/integral on a PDP-7, was: Space Travel

Dave Horsfall dave at horsfall.org
Mon Oct 21 15:14:09 AEST 2019

On Sat, 19 Oct 2019, Arthur Krewat wrote:

> Not to mention, if you start using log/alog tables, and/or sin/cos/tan 
> tables, and interpolation, you can quickly ramp up computation speed for 
> simple games that have a small matrix of coordinates. Something like 
> EMPIRE becomes quite easy.

Star Wars on a GT-40, which Andrew Hume (formerly UNSW, who is now at Bell 
last I heard) reverse-engineered to support three players, not two.

Oddly enough, DEC Field Circus stopped replacing GT-40 switch consoles
after that (certain keys were worn out)...

> Imagine my distress when, after cutting my teeth on a PDP-10, that 
> working on a 6502 I had to do my own division. Oh, the HORROR!

And you tell that to the young people of day, and they won't believe 

Now, where did I put my Z-80 full ANSI C Compiler...

-- Dave

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