8 Nov
2000
8 Nov
'00
9:25 a.m.
Hi Bruce,
On Wed, Nov 08, 2000 at 08:50:29AM -0700, Bruce Ray wrote:
The Nova 4 and and Nova 3 CPU cards are not
compatible, but most of the I/O
cards are.
I have a few devices I want to use to revive the Nova 3 that belongs
to a fellow hobbyist.
There's a Western peripherals mag tape controller, an SMD controller,
two basic I/O boards, and a RIANDA controller.
I think most of these cards are compatible with the Nova 3, but what
about the RIANDA disk controller in the "MEM I/O OPT" slot ?
This controller is connected to the Perkin Elmer ST-2222 diskdrive.
There are two main I/O daisey chain signals on a
standard Nova/Eclipse
backplane - interrupt priority in/out and data channel request in/out - and
they usually should be jumpered across unused slots if other I/O cards exist
higher in the chassis.
Right, can you tell me between what pins these signals should be jumpered ?
I assume there should be just a wire-wrap between those pins ?
Those don't sound like standard DG I/O card
numbers: I believe that the DG
board part numbers usually start with 005-xxxx-xx. I would have to research
that. DG put its 15" x 15" card numbers along the "front"
reinforcement
bar, that part of the card just opposite the finger contacts and directly
between the two extraction handles. There were usually a series of three
numbers on the bar.
Actually I am sure it's not original DG hardware.
I think the board was made by a company called "DMA", with maybe an
additional "C" before that. ("CDMA?")
Thanks to you and Craig for the additional information.
Sincerely,
Erik.