19 Mar
2007
19 Mar
'07
10:17 a.m.
________________________________
Van: cctalk-bounces at classiccmp.org namens Jay West
Verzonden: ma 19-03-2007 15:46
Aan: General Discussion: On-Topic and Off-Topic Posts
Onderwerp: 11/45 works, but....
The 11/45 has booted an OS for the first time since I
got it. RT11 came
right up. Interrupts are working. Awesome :) That's actually very satisfying
because the machine was in very rough shape when I got it.
Very nice!
[...snip...]
Another oddity reared it's head. The system was
very stable with just the RL
controller. I then installed an RX02 (M8256) controller (and removed the NPR
jumper for that slot). I turned on the system but left the RL02 turned off.
The RX02 worked perfectly. Then I turned on the RL02. It powered up ok (no
fault) but when I spin it up I got a fault light. It is not the drive, nor
is it the pack. If I shut everything down and leave the RX02 drive powered
off (but controller still installed), the RL02 will come up fine and not
fault. So there is apparently something that the RL controller doesn't like
about the RX02 controller? The NPR jumper is removed for the two slots where
the RL and RX controllers are, but definitely present in all other slots.
FWIW, I know that when RT11 runs and you remove the "READY" cap,
changing it from drive #1 to, say, drive #2, RT11 freezes. Of course, no I/O
activity is going on! Perhaps powering the RL02 has effects?
What happens if you turn on the system and the RX02 _and_ RL02 are
powered up at the same time? That's what I do with my 11/34C, and works fine.
Power requirements for an RX02 and RL02 are not that high.
Correct that the NPR jumper (CA1-CB1) is cut for RL11 and RX211 controller.
- Henk.
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