Hi, On Mon, Dec 07, 2015 at 02:25:25PM -0500, Christian Gauger-Cosgrove wrote: > On 6 December 2015 at 13:24, Mark G. Thomas <m...@misty.com> wrote: > > As much as I love old CPUs, I've lost my patience with hard disk drives. > > I've been using AztecMonster (search ebay) CF-SCSI adapters, with several-GB > > CF cards instead of spinning disks. The KA660 and several PDP-11/83s > > here run reliably from CF storage. I see now there are SCSI2SD cards for > > half the price of the AztecMonster CF adapters I've been using. These > > might be an alternative, if they play okay with whatever q-bus SCSI > > controller you find. Installing from SCSI CDROM and using flash > > storage is definitely the way to go if you can get the parts. > > That's great news to hear that the AztecMonster works on QBUS PDP-11s. > I now know exactly what my future plans are...
I had mixed results with some QBUS SCSI adapters. Some played well with the AztecMonster and some did not. Oddly, I think my Emulex UC07 was one that did not, but the CQDs and maybe one other model work fine. > But I have a "random" question for those here. I know some of the QBUS > (and UNIBUS) SCSI controllers can act both as an MSCP and TMSCP > controller. (CMD CQD-220A/TM for one example.) And I know that several > of the PDP-11 operating systems install from tape, and can install > from TMSCP tape (hello RSTS/E). What I'd like to know is: Is there > anything out there that can emulate a SCSI tape device on a CF card/SD > card/USB stick/what-have-you? So far, I've been using a DLT8000 when I've needed a sequential tape device, such as for the BSD2.11 install. It's been convenient to write the tape on a Linux or Sun box, then plug it into the PDP11. All my older SCSI tape drives (Exabyte and DAT) have developed problems, but this DLT8000 drive works great. Mark -- Mark G. Thomas (m...@misty.com), KC3DRE
