11 Mar
2005
11 Mar
'05
12:15 a.m.
Tried Ethan's arrangement. Also works as far as passing self-tests, although
I'm still having issues trying to get a terminal to work on
any of the DHV11's TXA ports. Any pointers on this? (the terminal
does work on OPA0). Specifically, I get this error message (same for TXA0
through TXA7):
$ SET TERMINAL TXA0:/PERMANENT/INTERACTIVE/DEVICE_TYPE=vt100
%SET-W-NOTSET, error modifying TXA0:
-SYSTEM-F-TIMEOUT, device timeout
Any pointers?
However, it does now show two
additional devices, HXA0: and HXA1:. According to everything
I can figure, these are two large Centronics-type connectors
hanging off of the "mystery card" which turned out to be a
DRQ3. Anyone know what this is for? The description in the field
guide isn't exactly verbose.
This machine also had a DRV11 in it when I got it, but no cabkit.
It [the DRV11] is no longer in the system.
Thanks again for everyone's patient assistance with this machine.
John
Alternately, you could arrange the bus this way (and I
_would_)
A--B--C--D
[ -- CPU --]
[ -- MEM --]
[TQK50][empty]
[-- DHV11 --]
[-- mystery card --]
[RQDX3][empty]
The grant chain goes down through the TQ50, across the DHV11, across
the mystery DMA card, then down to the RQDX3.
You could also put the M9047 grant card in the AB side of slot 6 and
the RQDX3 in the CD side of slot 6, in case you wanted to leave room
for a dual-height option later.
-ethan