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Extended Memory on the 41CX
08-30-2014, 03:02 AM
Post: #8
RE: Extended Memory on the 41CX
(08-30-2014 12:44 AM)EdFab Wrote:  I also have a SURVEYING 1 module in it, so one of my projects will be to determine what functions come with that module so I can check to see if it's working. A topic for another thread.

DeFab;
Your post made me look into my 41 program box. If you are really interested in the hp41 survey pac; I have a point storage routine written by Ted Kerber L.S. (D'Zign) in 1987. It's an addition to the survey pac which is stored in main memory and because of the way the 41 operates; it is executed before the stuff in ROM and uses your survey pac as great big hairy sub routines. People would get 40 to 100 coordinate pairs into storage in main, depending on what other programs they had using space there. You could re-write the storage lines to use your full blown extended and have 299 pairs (plus one in the registers) . That's not much now but I remember when that seemed ..... E N D L E S S .....

It will also batch-adjust them by Compass Rule. Tre cool, no?

I don't remember if I sent this to Dave for inclusion into the HP Museum DVD with the rest of the D'Zign 41 & 42 software series, and I don't have the very latest one to check. I better ask before he updates.
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Messages In This Thread
Extended Memory on the 41CX - EdFab - 08-29-2014, 05:27 AM
RE: Extended Memory on the 41CX - EdFab - 08-29-2014, 06:33 AM
RE: Extended Memory on the 41CX - EdFab - 08-30-2014, 12:44 AM
RE: Extended Memory on the 41CX - d b - 08-30-2014 03:02 AM
RE: Extended Memory on the 41CX - EdFab - 08-30-2014, 07:33 AM
RE: Extended Memory on the 41CX - EdFab - 08-30-2014, 07:11 PM
RE: Extended Memory on the 41CX - RMollov - 08-30-2014, 10:41 PM
RE: Extended Memory on the 41CX - EdFab - 08-31-2014, 05:42 AM



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