Hi Grant, I looked at my collection and I have the 67-69 ROMs, which I also identified as the DS/1000 ROMs (Distributed Systems Network). I also have a 91740-80033/34/35 set which I don't know what it is. Does anyone know? Anyhow, looking at the ROMs and dates, I suspect these are E/F microcode only and would not work on the 21MX. So I think you'll have to go with one of my cables, a standard mag tape card set and disconnecting your HPIB card from the 7970 - so you were right from the start. I would still be intrigued to see if anyone has the 70-72 set, and did not know they were a DS/1000 extension, thanks Jay. Marc
> -----Original Message----- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of jwest--- > via cctalk > Sent: Sunday, June 28, 2020 6:21 AM > To: gr...@klyball.com; 'General Discussion: On-Topic Posts' > Subject: RE: Hp 21mx loader rom set > > Grant wrote.... > ------------------------ > Hi all, i am looking for a loader rom set for my 21mx and does not seem to > be around at the usual places, I am hoping to find a leed. > Here is what i am in need of. > > > 12992L consisting of > > 12992-80011 > 91740-80070 > 91740-80071 > 91740-80072 > > there is a set of 91740 on bit savers but with a suffix of 67-69 ? > ------------------------ > > Pretty sure I have a binary copy of all known 12992's, the ones I use I just > burn out to a set of blanks. The 7974 loader rom uses the boot loader > extension firmware for DS/1000. Are you actually running ds/1000?? I haven't > seen anyone get that up and running. > > I'll see if I can dig up the bin (or an already burned chipset). > > J >