68000 coprocessor board

[Frank McConnell]

Mike Loewen wrote:
>    I'm trying to find some documentation for an HSC C016 processor
> board, which came with an IMSAI 8080 I acquired.  It has a Motorola
> 68000 8MHz processor, and connects to a Cromemco ZPU board in the
> IMSAI via a small daughterboard which plugs in underneath the Z80A.  I
> have a 8" disk for it which has CP/M 68K and some software for
> switching back and forth between processors (apparently).

I've got one of these.  Never done anything with it, it came in a lot
with some other stuff, and if I've got the Z80 end of the thing I don't
know where it is (but thanks for posting the picture of it, now maybe
I'll recognize it if I run across it and put it with the rest of the
CO16 bits).

Mine is in a metal case with a power supply, and it's got a board on
the 68000 end that plugs between the main board and the 68000 and 
provides a place to plug in one to four NS16081 FPUs.  

I've got four manuals:
  CO-1668 User's Manual
  Users Manual for Z80 Cross Assembler
  Users Manual for MC68000 Cross Assembler
  CO1668 CPM 68K Implementation Users Manual

The switches on the Z80 board set an I/O port number that the board
responds to; switches 1-6 are the high order bits of the port number
(1 is most significant bit, 6 is least significant switched bit, 
the other two bits are 0 and are less significant than switch 6).

-Frank McConnell