DECmate III and Rainbow 100+

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Wed Feb 23 18:35:45 2005

>
> At 04:53 PM 2/22/2005, you wrote:
> > >
> > > At 09:02 AM 2/22/2005, you wrote:
> > > I prefer to think of it as a Z-80 with an 8086 coprocessor :)
> >
> >It's actuallly an 8088....
> >
> >-tony
>
> I haven't looked under the hood on mine in ages :( going to have to do
> that again soon....

Well, it's a very easy machine to take apart into modules, you don't
actually need any tools at all from what I remember....

It's also a very difficult machine to set up so you can actually probe
the PCBs. I remember having the mainboard on my bench. the PSU
upside-down alongside it (with the normal cable just managing to link
them), the main switch/fan bracket (the one bit you do need a screwdriver
to remove from the case) hanging alongside the PSU. But I managed to find
the problem with the bus arbitration circuit....

-tony
Received on Wed Feb 23 2005 - 18:35:45 GMT