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Geoff Quickfall · 11-22-2024, 05:40 AM

It is HP and it does calculate but it is not quite an HP calculator. I am referring to my HP 9825A desktop computer.

I restored the keyboard about five years ago and Larry Atherton (see post in general forum about Larry) restored a machine my tape drive to accept that 100 tapes. He also supplied five tapes with statistical, mathematical, testing programs for the HP to 9825A.

He was extremely helpful filling in blanks that the manuals do not cover.

With that in mind, I have acquired to tape drives, a master and slave HPIB, 8 inch floppy drives; the 9885M and the 9885S. Now I have to find the correct HPIB cable to attach these to my 9825A. Also do need a ROM module for plugged in to the front or do they need dedicated PCA boards internally.

I would appreciate any help identifying the requirements to attach these disc drives to the 9825A.