30 Aug
2011
30 Aug
'11
4:42 p.m.
On 30/08/2011 22:32, Rob Jarratt wrote:
I have a MicroVAX II in a BA123 enclosure and I am
experiencing some
problems getting it to see the RD53. Whenever I try to boot I just get the
error DEVOFFLINE and the Ready light on the front panel goes out when this
happens (you can't get it to switch on again if you press the button a few
times).
The RD53 is known to work as it will boot in a MicroVAX 2000. The RQDX3 also
works as I have tested it in a working MicroVAX II (BA23).
Is it possible that the drive select jumper on the RD53 is on the wrong
DS pin? I don't know about a MicroVAX 2000, but in the BA23 it has to
be on DS0 for one bay and DS1 for the other, but so long as you only
have one drive, it won't actually matter. In a BA123 with an M9058, it
would usually be on DS1 (or DS2 or DS3, it won't usually matter).
But it's worth trying it on DS0. On the M9058, the four incoming drive
select signals (DS0...DS3) are routed separately to the four 34-pin
connectors, so one select goes to J2 pin 26 and via a jumper to 28, 30,
and 32; another select goes to J3 pins 26, 28, 30, and 32, and so on
(and the ones that go to J3 and J4 also go, via jumpers, to DS0 and DS1
on the floppy connector, J11 pins 10 and 12, so don't use those if you
have a floppy drive connected).
There's a catch, though. On each of J1...J4, the DS signal goes
directly to pin 26, but via a jumper to pins 28, 30, and 32. So if the
jumper is missing, and you have the RD53 configured to respond to
anything except DS0, it won't go online.
--
Pete Peter Turnbull
Network Manager
University of York