> On Aug 3, 2017, at 7:10 AM, Rick Bensene via cctalk <cctalk@classiccmp.org> > wrote: > > That said, my PDP 11 is Unibus, and Unibus SCSI controllers are darned > expen$ive.
They’re desirable and not a lot around. So it’s not terribly surprising. Having several different Unibus board designs in various stages (not making a lot of progress because of this damned thing called “work”) I can tell you that producing a *reliable* Unibus board is *not* going to be cheap. > > I do have some working Fujitsu SMD drives (now, these drives just keep on > running!), and I'd love to find a Unibus SMD controller (preferably Emulex), > so that I could run a couple of these drives on the 11. Anyone out there > got one that emulates popular PDP-11 disk drives supported by most of the > OS's (RT-11, RSTS, and BSD Unix) that can make a given SMD drive "appear" > compatible that the would be willing to part with for a reasonable price? > I've heard that the Emulex UD33 and SC21 are the SMD controllers of choice, > but do they do MSCP? I'd love to head any comments from those "in the know" > out there. Are there other alternatives other than Emulex that may work well > also? > If memory serves me correctly, the Emulex UD33 and SC21 emulate RP11 style controllers. Which is a *good* thing. For older Unibus systems RP11 (and OS’s) it’s better supported than MSCP. TTFN - Guy
