Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!mit-eddie!uw-beaver!entropy!dataio!shiloh!rwing!nanook
From: nanook@rwing.UUCP (Robert Dinse)
Newsgroups: comp.sys.tandy
Subject: Tandy 6000 Xenix HD Step Rate
Keywords: Tandy 6000 Xenix Step Rate
Message-ID: <117@rwing.UUCP>
Date: 19 Jul 90 23:15:47 GMT
Organization: Totally Unorganized
Lines: 16


     I have Micropolis 1325's connected to an internal hard drive
controller on a Tandy 6000 under Xenix 3.02.00. The Micropolis 1325
is a drive with buffered seek, which means you can send it step pulses
rapidly, it buffers them and figures out internally how fast it can
work the actuator. This allows faster seek times than a fixed step
would because it can account for acceleration and deceleration of the
actuator assembly.
 
     The problem, the step rate is stuck at the slow value that Tandy
decided to use and they didn't provide any obvious method to change it.
They give you a command, "drive" to set floppy step speed, but nothing
to set hard drive step rates.
 
     Has anyone figured out a patch or other method of altering the step
rate to something more reasonable (fast) for a 1325?