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

Check your email. How can you tell if it uses a 600 RPM mechanism or not? On Thu, Nov 16, 2017 at 3:17 AM, Eric Smith <spacewar at gmail.com> wrote: > Hi Eric, > > It's not urgent, but when you have a chance, could you dump the 9122C > ROM(s) and take high resolution photos of the controller board? > > Since it does HD, I suspect it probably does not use a 600 RPM mechanism. > > Thanks! > > Best regards, > Eric > > > On Nov 15, 2017 17:45, "Eric Schlaepfer via cctalk" <cctalk at classiccmp.org> > wrote: > >> It'd be interesting to find out how well that PRM-85 works. I've laid out >> a >> board for a rough equivalent but I haven't fabbed it out. It may be >> cheaper >> for me to buy that instead. >> >> I've also got a 9122C but I don't have the mass storage ROM so I can't use >> it with my 85. Right now I'm using it with my 9000 series 300. >> >> On Tue, Nov 14, 2017 at 8:26 PM, 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. >>>