Is there anyone out there who has (1) a working HP 82104A magnetic card reader and (2) an HP-41->PC connection who would be willing to receive 6 magnetic cards by snail mail and email back a very useful program? I'd like to provide it to hp41.org, as well as having a copy on my iPhone (now that I'm rediscovering the wonderfulness of the HP-41 with an emulator).
I wrote a very useful program EIGEN that computes eigenvalues of order 2, 3, 4, and 5 matrices -- this functionality is not available in the existing libraries (I see order 3 and 4 in separate packages, but no order 5 -- order 6 is probably beyond the HP-41's limited memory).
My problem: the program ONLY exists on a single backup of 6 HP 82104A magnetic cards. I just attempted to read the cards, by my old card reader has "gooey roller syndrome" and will not read cards.
I could attempt to repair the card reader's O rings, but now, the only use of this reader is to get a copy of the EIGEN program, and it would be MUCH easier if some kind person would be able to read and email the code. Once this is done, I'll provide it to hp41.org.
Please let me know here, or by private email visible on my profile.