Pinout for SED9421

Allison ajp166 at
Fri Nov 25 14:46:44 CST 2005

>Subject: Re: Pinout for SED9421
>   From: Fred Cisin <cisin at>
>   Date: Fri, 25 Nov 2005 12:28:14 -0800 (PST)
>     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at>
>On Fri, 25 Nov 2005, Allison wrote:
>> >>The all time worst was the 1771 internal data sep.  Tandy initally did
>> >that to save parts. Really bad.
>The 1771 may have CLAIMED to have an internal data separator; performance
>did not bear that out.

;)  I'm not going to argue that! ;)

>You were much too gentle.  Next time, we'll loan you a bigger bat.

Hey North actually called me obnoxious once. ;)

>the Micropolis lead screw was SLOW.  But noticably more reliable than
>either the Shugart spiral, or the split bands.

Shugart whas prolific but not very good.


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