Date   : Fri, 08 Jul 1983 11:49:04-PDT (Fri)
From   : decvax!wivax!linus!philabs!cmcl2!lanl-a!jp@ucb-vax
Subject: Non-Heath 8" disk drives on H-100/Z-100 systems

We are having a problem using Siemens FDD-100-8 series disk drives
with the Heath h-100 computer.  The problem revolves around the track-to-
track step times.  It seems the system comes set up for 3ms step times
but the Siemens (and Shugart 801's) are slower than this.  The information
we have received from Heath has been insufficient to solve the problem.
The symptoms are: Select errors on boot.  Sometimes we can read directories
and close-in files. Other times we can't. The drives have been checked on
another system that used a WD1791 controller and seem to be OK.
Has anyone had any experience with this problem that might be helpful to us??
The Siemens drives would be a real bargain if the frustration could be 
eliminated.

Thanks,

Jim Potter and Ray Martin  (lanl-a!jp@lanl)