Does anyone have any info on this particular system? It looks like I've got
  two different generations of CPU cards for it, which I
was told would not
 be compatible with each other. My digging online has turned up very little
 on ACE in general.
 The sytem:
 
http://i.imgur.com/LXMKKwx.jpg
 Close-up of cards:
 
http://i.imgur.com/oEeTscu.jpg
 Pictures of the cards would be helpful. The first card seems to  have a ROM
tabled Turbo DOS  CPZ 4 8000, floppy only. The card has both a 40 pin
connector and a 26 pin connector (5 1/4 & 8 inch maybe). One of the 16 pin
connectors is labeled plotter and could be a serial port.
Paxton
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Paxton Hoag
Astoria, OR
USA