Magnetic Card Questions

[[kby]]

Just to be clear, you can’t read a card written by a -65 on a -67/-97 or vice versa. But you can overwrite the card on either machine, and then it’s now compatible with the overwriting machine. In other other words, a blank card is just that—blank. It has no inherent formatting for a specific machine.

I thought I’ve removed marker and/or cleaned cards with isopropanol.-kby

(12-05-2020 12:57 PM)AndiGer Wrote:  Basically you can use the same type of magnetic cards in both machines.
But: Written cards for HP-65 and HP-67/-97 are not interchangable. So - a card written in an HP-65 can't be read by a HP-67/-97 and vice versa. The only compatibility is HP-67/-97 cards in the HP-41 card reader (but there some limits) - and the card reader must be attached when running HP-67/-97 programs.
Respecting the magnetic cards HP-67 and HP-97 are fully compatible.