Pinout for SED9421 - test-drb@ccmp.vtda.org

25 Nov 2005

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Subject: Re: Pinout for SED9421
   From: woodelf <bfranchuk at jetnet.ab.ca>
   Date: Fri, 25 Nov 2005 13:51:27 -0700
     To: General Discussion: On-Topic and Off-Topic Posts <cctalk at
classiccmp.org>

Allison wrote:

 Either that a Dflop(74LS74), hex D-latch(74LS174)
and 32x4 prom(74LS288).

Just for the heck of it,  got a schematic and a prom listing? 
Sure do.  Send a scanner and a system that won't croak under the load.
It's in the net, someone about three months ago found it.

...
 Did anybody ever use a serial chip and a data
separater
rather than a floppy disk controler? 
Yes, many.  usually its a sync chip.

Allison