68000 coprocessor board

[Mike Loewen]

On Sat, 16 May 2009, Gordon JC Pearce wrote:

>> http://sturgeon.css.psu.edu/~mloewen/Oldtech/IMSAI/HSCDaughter-L.jpg
>>
>>     I've been able to find only a few references to this board, and no
>> documentation.  Does anyone here have experience with this setup, or know
>> where to find docs?  Thanks.
>
> Well, the daughterboard looks like it takes an EPROM and maps it into
> memory somewhere.  There are a couple of octal buffers and a comparator
> on there, so presumably you set where it falls in the address space with
> the DIP switch.

    Sorry, I should have been a bit more clear.  The daughterboard plugs 
into the Z80 socket on the ZPU board and the Z80 plugs into the socket on 
the daughterboard.  Here it is in place in the IMSAI:

http://sturgeon.css.psu.edu/~mloewen/Oldtech/IMSAI/IMSAI-05L.jpg

    The ribbon cable from the daughterboard plugs into the 68000 board.


Mike Loewen				mloewen at cpumagic.scol.pa.us
Old Technology	http://sturgeon.css.psu.edu/~mloewen/Oldtech/