HP-85A to HP-85B Conversion (82972A)
Message #1 Posted by Mike on 24 Oct 2003, 3:30 p.m.
HP-82972A Conversion (HP-85A to HP-85B Conversion)
I have an HP-85B that is marked HP-85 and has a sticker inside the printer compartment that says "82972A Installed."
I have always just assumed that was some sort of upgrade. I haven't been able to find anything on this part number. Maybe I haven't looked hard enough. However, while going through some misc HP-85 documents today, I came across the "Conversion Instruction Sheet."
If I read this correctly, the conversion is very extensive. Install HP-85B PCA, Printer/Power Supply PCA, Logic PCA, as well as Mass Storage, Electronic Disc, and I/O ROMs.
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