Date   : Mon, 25 Jul 2005 19:16:38 +0000
From   : Jules Richardson <julesrichardsonuk@...>
Subject: Re: Co-Processor

On Mon, 2005-07-25 at 19:57 +0100, Sprow wrote:
> In article <003501c59144$c04a8500$e25737d2@...>,
>    Corey And Beckie <corey.beckie@...> wrote:
> > does anyone have any details, (circuit diagrams,pictures) of how to build 
> > a 6502 co processor, as i have got a spare master et with all the the chip 
> > in it
> 
> Hi,
> I think the service guide is on the internet somewhere, though I couldn't
> immediately find it looking now.
> 
> Trying to build one from base parts might prove a bit tricky on a few counts
>  a) getting the blank PCB
>  b) getting the Master Tube ULA
>  c) getting the DRAM
>  d) possibly the 2732 EPROM/image

The PCB could be homebrewed though. DRAM and ROM images aren't really a
problem... but finding a Tube ULA might be tricky.

Re-reading the original post, I have a feeling that the person's perhaps
wanting to make a 6502 copro for the BBC B out of parts from a Master.
Maybe.

cheers

Jules