Much swearing - was Re: Do-It-Yourself PDP-11 help!

From: Gordon JC Pearce <gordon_at_gjcp.net>
Date: Wed Feb 16 11:52:57 2005

Vintage Computer Festival wrote:
> On Wed, 16 Feb 2005, Gordon JC Pearce wrote:
>
>
>>On closer inspection, the termination resistor pack beside the "B"
>>connector on my KDJ11-A is cracked. How critical are the termination
>>resistors, and what value resistor pack do I need?
>
>
> Not entirely as I've learned, though they might be in your case. Also,
> there might be an imbalance in the bus because some signals are not being
> terminated? I'm speaking entirely out of ignorance here, so smite me if
> I'm wrong.
>
> You might try patching the cracked resistor pack somehow, perhaps
> bypassing it with the appropriately valued resistor.
>


OK, I've replaced the cracked resistor pack. I used 270 ohm resistors
rather than the 240 ohm that the pack measured out at, but I can't see
that making a difference.

Still got the same problem. So - either I've got a gubbed console card
or I've got a gubbed KDJ11-A.

Anyone got any cards they are willing to sell or swap?

Gordon.
Received on Wed Feb 16 2005 - 11:52:57 GMT