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

From: Gordon JC Pearce <>
Date: Wed Feb 16 07:52:48 2005

Gordon JC Pearce wrote:
> Hi all,
> I've got what I believe is a PDP-11/73 of some sort - it lives in a 5U
> 19" rack case with a couple of MFM hard disks, and appears to mostly be
> made of third-party bits.

<foul Gaelic curses deleted>

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?

Looking at circuit diagrams for termination cards, it looks like I want
220 ohm resistors, going to +5V.

How critical are the bus termination resistors?

Received on Wed Feb 16 2005 - 07:52:48 GMT

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