WTB: HP-85 16k RAM Module and HPIB Floppy Drive

Ed Sharpe couryhouse at aol.com
Tue Nov 14 22:33:04 CST 2017

ok back in my day.. I do not think 85 adressed modern drive of 1.44 meg..? so that was what I was going on.. yes if you can use 1.44 do so.. older new media hard to find... 

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On Tuesday, November 14, 2017 Mark J. Blair via cctalk <cctalk at classiccmp.org> wrote:


On Nov 14, 2017, at 20:11, Ed Sharpe via cctalk <cctalk at classiccmp.org> wrote:
> wondervifcthec9122 drives,will work on 85?

I think I can guess what you meant to say there... :)

I’ve ordered a PRM-85 (a modern reprogrammable ROM drawer replacement) which includes the HP-85B version of the Mass Storage ROM, and the Extended Mass Storage ROM. Based on what I have read, I think that should let my A model use the newer 9122C drive, and other drives using either the Amigo or SS-80 protocols.

I’d like to get the 9122C mostly because I have a much easier time finding 1.44M media than the older double density media. eBay and I don’t talk, so that limits my options a bit. If I had easy access to lots of 3.5” DD media, then I would consider getting one of the more plentiful (?) other 3.5” HPIB floppy drives. 

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