>It did have the M8186 11/23 CPU in the 11/03 chassis when I got it, not
>that that means anything. I did change the memory module to a 128KW
>MSV11-LK.
My guess is that the chassis has either got a different or upgraded
backplane. Is there any kind of a number on the backplane itself that you
can easily see?
OTOH, maybe I'm misremembering and a Q18 CPU will work in a Q16 backplane.
>There's an older Q-bus VAX system at the University that will probably be
>taken out of service soon, and there's a chance I can grab its SCSI
>controller (I'm not sure exactly what it has, but I know it has one).
Hopefully it's a CMD controller.
>Its kind of hard to explain, but I'll try. I work for a university on a
Actually it makes perfect sense.
>to be corrected. Lacking the funding to develop something new, combined
>with everyone assuming I wouldn't be able to revive this system, I decided
>to rebuilt it on my own. (We only had a few pieces of the original system
>that attached to the DMA and PIO interfaces, which didn't work, and none
>of the PDP equipment). It was working pretty well until the RX02
Are you using specific Q-Bus boards to interface with the equipment. This
could be a problem if you decided to try and move to a Q22 system.
>incident. I was hoping I could scrape up a SCSI controller from somewhere
>around the university, so I could have a longer-term storage option. So
>in the next couple of months, it will get used for a "production" purpose,
>but then it won't be needed for quite awhile.
Something else you might want to look for is an ESDI controller. It would
allow you to use slightly more reliable disks, though SCSI is the best.
The important thing is to stay away from MFM disks!
Zane
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh_at_aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
Received on Thu Feb 28 2002 - 02:48:00 GMT