30 Nov
2014
30 Nov
'14
1:47 p.m.
On 11/30/2014 12:51 AM, tony duell wrote:
It needs a good set of NiCd cells on the power control
board to start it up.
If not, you have to do a 'jumpstart' involving connecting a 9V battery to a
connector
on that board. Some owners added an external socket wired there to make it
easier to so this.
I think I've seen four of the machines in total; every single one of them
had suffered significant corrosion to the main PCB beneath because of the
batteries.
There is a rare adapter which adds 3 ISA slots. 8 bit
ones IIRC.
I know the CG-200 at NMoC has such an adapter. I've actually got a photo of
it here - it has 3x 8-bit ISA slots toward the rear of the system, as you
say, but then there are PCB traces at the other end of the adapter board
for three 64-pin sockets, although only one is physically fitted on NMoC's
machine. Purpose unknown, and it'd be interesting to know if anything ever
made use of it.
That particular system has an ISA serial board and some flavour of ISA
video board (whatever the latter is, it has 8x 41264 dual-port RAM chips,
and there's a 20-way ribbon cable attached which runs off somewhere beneath
the ISA adapter board). Unfortunately the machine - like the MG-1's - had
also suffered significant corrosion.
cheers
Jules