14 Sep
1999
14 Sep
'99
8:20 a.m.
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.
Neil Morrison
email:morrison@t-iii.com
-----Original Message-----
From: allisonp(a)world.std.com [SMTP:allisonp@world.std.com]
Sent: Tuesday, September 14, 1999 12:58 PM
To: Discussion re-collecting of classic computers
Subject: RE: Reading TRS-80 discs (was RE: Archiving old discs...)
FYI: trs80s used WD 1771 (mod-1) and later ones used the 1793. The 1771
is SD only and the 1793 does both. There were 1793 adaptors for the
MOD-1.
Allison