[sebhc] Shugart 400L Drive

Dave Dunfield dave06a at dunfield.com
Fri Oct 13 05:56:57 CDT 2006

> The original SA400, as you note, was certified for only 35 tracks.  I'm
> guessing that the "L" model was certified for 40 (even the 35 track model
> might have actually worked on all 40 tracks).

The 400L ia indeed the 40 track version of the SA-400. IIRC the 400 (no
L) did not work as a 40 track drive.

I can't help with details of the SA-400 <> Heathkit interface, however I do
have the full SA-400 OEM Manual up on my site - it's in my Altair section,
go to "Documentation" and then "Reference Documents" - this will tell
you all about the jumpers and interface requirements.


dave06a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools: www.dunfield.com
com             Collector of vintage computing equipment:
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