MicroVAX II - TK50 problem

[John Willis]

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
>