After letting my HP 41 sit on shelf for a number of years, I have recently had reason to attempt to rescue and use some programs I wrote back about 1981. Fortunately the card reader still works (it was repaired once some years ago by HP for the gummy drive roller problem) and seems to work OK. Unfortunately I have found that from 10 to 50% of cards for a program are unreadable. So far as I know it is only possible to read cards into memory in sequence and when one gets to an unreadable side, that is all you are going to load. I have some hardcopy listings, but entering multi-hundred keystroke programs with no errors is a challenging task. What kind of life should I reasonably expect from these cards? Is there any way to load cards past the MALFUNCTION code shown when a bad card side is attempted to be read so that one can enter only the missing program steps? Any thoughts, comments would be appreciated. Thanks.
HP41 Magnetic Cards
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