Re: Moving programs between HP-41's Message #5 Posted by Vieira, Luiz C. (Brazil) on 26 Aug 2006, 3:44 p.m., in response to message #4 by Karl Schneider
HI, Karl; thank you for your additional info.
Quote: I have tried quick-swapping an X-Memory module containing a program from a C/CV with installed X-Functions module to a CX. I filled the first 124 registers of Extended Memory -- no more, no less -- on both calculators with "junk", so that the program to be exchanged began at the start of memory on the X-Memory module. Unfortunately, it didn't work for me.
I once tried the same procedure with two HP41CX and I used data files instead of program files. I'll do that again because I have the feeling of having succeeded. I once tried simply inserting a new module with data and did not succeed as well, so I thought maybe the 'receiving' CX should be seeing the full extent of available X-memory prior to swap modules, so I considered having one memory module in each CX to swap. Anyway, I'll do that again because I remember reasoning about this, but I am not so sure if I actually performed such maneuver.
Quote: I have two HP-41 HP-IL modules, and have wondered if it were possible to exchange data directly between two HP-41's by installing an HP-IL in each calculator, and connecting the HP-IL's back-to-back. Does anyone know for sure?
This one I can tell for sure 8^) I once connected the HP41 and an HP71B, both alone in the same loop. I configured the HP71B as a listener, and the HP41 was able to 'see' the HP71 in the loop. It happens that there should be only one controler in an IL loop, and the HP41 cannot be configured as a listener (neither can the HP75), so I cannot see a way of having more than one HP41 in a loop.
And for the records: I agree with you, the X-Functions/Memory module is, indeed, a cheap way to transfer programs from one HP41 to another. But consider that a Diego's NoVRAM can be configured as a 16KRAM HEPAX with many of the system-related X-Functions available, and you can even use the remaining 8KFlash to retain either one 8KROM or two 4KROM images. And you can swap the NoVRAM without worrying about loosing user data, it has FLASH memory, instead. As a happy NoVRAM user, I can tell you that, comparing costs and functionality, Diego's NoVRAM maybe even cheaper...
Best regards.
Luiz (Brazil)
Edited: 26 Aug 2006, 3:48 p.m.
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