IBM LPFK reverse engineering

[Tony Duell]

> A very similar puzzle, except played on a 3x3 grid and the neighborhood 
> around a move wrapped around the borders, appeared in a Processor 
> Technology publication back in 1977, although its origin is even earlier 
> (see comment below):
> 
>      http://www.sol20.org/articles/access_v1n4.pdf
> 
> It used the numeric keyboard as the 3x3 pad to control game play.  I 
> reconstructed the source code from that publication:
> 
>      http://www.sol20.org/programs/galaxy.asm
> 
> The comments for it say:
> 
> ;  PROGRAM ORIGINALLY SUBMITTED TO THE
> ;  HEWLETT-PACKARD SOFTWARE LIBRARY IN BASIC

When I was reading you artlcle, I thought of an HP calculator program 
that seemsed to be very similar...

> ;  SUBSEQUENTLY PUBLISHED BY PEOPLE'S COMPUTER
> ;  COMPANY IN SEPT 74 AS "TEASER"

A later version of this program appears in the HP67/97 Games Pac 1. it 
runs fine on the HP41 with a card reader, and IIRC is available from the 
HP museum web site.

-tony