New subject: Mindset keyboard - who needed to borrow it?

25 Nov 2005

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Subject: Re: Pinout for SED9421
   From: "Chuck Guzis" <cclist at sydex.com>
   Date: Fri, 25 Nov 2005 13:25:49 -0800
     To: cctalk at classiccmp.org

On 11/25/2005 at 1:51 PM woodelf wrote:

 Just for the heck of it,  got a schematic and a
prom listing?
Did anybody ever use a serial chip and a data separater
rather than a floppy disk controler? 
I've done it on lashups to read very oddball floppies.  A 2651 in sync mode
will go to something like 600KHz or 1MHz data rate.

The commonly used 2601 USRT was common, also the Z80 SIO in sync mode
or the NEC d7201(8274) as they were faster. 

Allison