From: utzoo!decvax!ucbvax!info-cpm
Newsgroups: fa.info-cpm
Title: DTC SA1410 controller problem
Article-I.D.: ucbvax.195
Posted: Thu Dec  2 22:22:50 1982
Received: Sat Dec  4 07:29:25 1982

>From MARON@Lll-Mfe  Thu Dec  2 22:02:44 1982
To: info-cpm@Mit-Mc
Via:  Mit-Mc; 2 Dec 82 20:35-EST
Via:  Brl; 2 Dec 82 20:46-EST
Via:  Brl-Bmd; 2 Dec 82 20:54-EST

It may be of interest to some to know about hard disk controllers, 
specifically SASI compatible. I purchased a package from Hamilton-Avnet
of a Shugart SA600 and a SA1410 controller (actually made by DTC). It
seems (by talking to Shugart) that DTC installed an undocumented
feature requiring the command byte to be issued within 256microseconds
after selecting the controller or a SEQUENCE TIMEout error occurs. This
is not good (for the Big Board II and others). Shugart said that they
will trade boards for the newer version which removes this timeout.
This will make the DTC controller more compatible with others, like the
XEBEC etc. This trade-in function is to begin around the 6-10 of December.
If anyone has such a problem talk to their distributor. I will let you
know of developments if anyone responds that they care. --Neil