Date   : Sun, 11 Dec 2011 17:12:00 -0600
From   : jules.richardson99@... (Jules Richardson)
Subject: 32016 + 32082

John Kortink wrote:
> I've just acquired a 32016 Second Processor, and I've
> noticed that this one has a 32082 MMU on board.

Hmm, a very rare beast indeed. My memory's telling me that the socket (or 
solder pads) next to the CPU were intended for a 32081 FPU, not an MMU (and 
indeed a have a disk claiming to be for FPU soak tests). I just had a quick 
trawl of what scanned docs I have here and unfortunately can't see anything 
that says one way or the other, but I'll try and take a better look when I 
get a chance.

Is this a 256K/1MB board (the "small" 32016) or a 1MB/4MB board (the 
"large" 32016)? (I've only ever seen solder pads on the small boards, 
whereas the large boards typically have sockets fitted - but not populated 
with a chip; that's from a sample of maybe 20 small boards and 10 large ones)

There did exist an Acorn/Logica project to get Xenix running on the ACW; it 
wouldn't surprise me if that wouldn't require use of a 32082 MMU (but I 
don't know how far that project progressed - maybe it was axed long before 
they really did any serious playing with the hardware!)

I've got a service manual for the ACW, currently overseas - it'll go on the 
scanning pile once it's here with me, but if I remember right that has 
schematics for the large board only.

cheers

Jules