brew-your-own-unibus boards?

From: Pete Turnbull <>
Date: Mon Jan 19 16:35:47 2004

On Jan 19, 16:24, Brad Parker wrote:
> der Mouse wrote:
> ...
> >Once, years ago, I was involved in building a designed-on-the-spot
> >board.
> Which raises a question I've been meaning to ask.
> Seems like a 4 layer board with gold fingers would work - the few
> I've handled seemed pretty thick, however. I'm guessing the
> needs to be correct.

Small variations shouldn't matter. I've not noticed any Unibus boards
being abnormally thick.

> I have not (yet) looked at a unibus card schematic - would be it hard
> create a bus master IDE interface?
> Is a unibus controller a relatively straight forward TTL design ?

Dunno about the DMA -- probably not hard -- but the rest is

> And, if I did manage to create a realiable IDE interface, would
> else want one?

For low enough cost, yes, me!

Pete						Peter Turnbull
						Network Manager
						University of York
Received on Mon Jan 19 2004 - 16:35:47 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:36:46 BST