Reading TRS-80 discs (was RE: Archiving old discs...)

From: allisonp_at_world.std.com <(allisonp_at_world.std.com)>
Date: Tue Sep 14 16:09:20 1999

On Tue, 14 Sep 1999 morrison_at_t-iii.com wrote:

> The real problem was that the DD controller could only write two types of
> data marks, whereas the SD one could write four.
> Randy Cook chose the two the DD controller couldn't write for the Mod I SD
> O/S.

That was only part of it though an important one. Still you can't read DD
with a SD chip. And it was the SD chip 1771 that could write all sorts of
bizzare formats.

Allison
Received on Tue Sep 14 1999 - 16:09:20 BST