Date : Sun, 11 Dec 2011 22:50:24 +0100
From : kortink@... (John Kortink)
Subject: 32016 + 32082
On Sun, 11 Dec 2011 21:08:58 -0000, Mike Pepper <profpep@...>
wrote:
>> I've just acquired a 32016 Second Processor, and I've
>> noticed that this one has a 32082 MMU on board.
>>
>> Anyone know in what contexts this provides any benefits ?
>> Because no pictures on the net seem to show one (it's just
>> an empty space, not even a socket). So I suppose it is
>> (optionally) useful when running some version of Panos
>> (I have both 1.1 and 1.4).
>>
>Is this a 1 Meg or a 4 Meg board?
It's the actual cheese wedge, 1 MB.
>I'd be interested to see a picture
I've just cleaned it up, and I'll be making pictures very
soon (do remind me if it takes too long).
>, since I have the chip, (oddly, it came in with some BBC
>scrap), and a 1 Meg 32016 board I re-cased, (it came from
>an earlier Cambridge workstation that someone had broken
>for spares)..
>
>I take it that the MMU is fitted as IC2.
Yes.
>Is IC16 fitted too?
No.
>and are there more than 2 links fitted on the stack to
>the left of where IC 16 would go?
I presume you mean the area marked LK5 'north' of IC16.
Then no. 2 links at 'H' and 'G', nothing at 'A' through
'F'.
>Mine is fitted with 32 x 256 bit RAM I've never seen a
>circuit diagram
I haven't either. It's clearly different from the ACW
board (the schematic of which actually is available
on the net).
>, and would be interested to know if it was possible to
>upgrade without the much bigger board, (there seem to be
>quite a few RAM links). I have saved quite a bit of DRAM
>from that era for repairs and rebuilds, though my HP 9823
>repair has eaten quite a lot of the 16 K RAMs.
It's an interesting thought. Mine has 32 x 256 (x 1) too.
>Hope it all works; very few 32016's seem to have survived.
It seems to work perfectly. And it's in perfect condition.
Full set of manuals and original discs too. I don't think
it has been used much.
John Kortink
--
Email : kortink@...
Homepage : http://www.inter.nl.net/users/J.Kortink