Picked the CG-200 up earlier. Externally it's the same case style /
external design as the MG-1 except for the CG-200 lettering on the
front.
Some quick images of the guts (circa 200KB each):
http://www.patooie.com/comps/whitechapel/cg200/cg200.html
It's got a memory expansion fitted (I suspect it's the same 2MB board as
the MG-1 machines use), plus it has the ISA backplane (whoo!) - into
which is plugged a full-length video board (and a serial board).
I don't recognise the video board as being any off-the-shelf PC type of
board, so it's possibly a custom design for the CG-200 machines.
Initially the motherboard looks the same as my memory of the MG-1 board
layout - except that I don't recall that honking great daughterboard on
the MG-1 which presumably holds the CG-200's CPU (mind you, I've never
seen an MG-200 so perhaps they have the same board). There's no sign of
a 32016 on the motherboard anyway, so I presume that whatever CPU the
machine uses is buried beneath one of the heaksinks on that
daughterboard.
Unfortunately the corrosion is pretty bad as the machine's obviously
been stored with the batteries in it for many years - I haven't had a
chance to see just how extensive it is yet, though. rust / dust - wise
it looks to be in better condition than some of the MG-1's that I've
seen, so I'm hopeful that the hard disk's survived.
Time to get some vinegar on those boards...
cheers
Jules