Xref: utzoo comp.sys.atari.st:36507 comp.sys.atari.st.tech:1766
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!cs.utexas.edu!sun-barr!ccut!wnoc-tyo-news!toumon!wucc!ytsuji
From: ytsuji@wucc.waseda.ac.jp (Y.Tsuji Y.Tsuji shagaku)
Newsgroups: comp.sys.atari.st,comp.sys.atari.st.tech
Subject: Re: Setting Floppy Seek Rate in all TOS versions
Summary: setting 8MHz while STEP in HD-mode
Keywords: seekrate steprate
Message-ID: <5329@wucc.waseda.ac.jp>
Date: 24 Mar 91 23:39:31 GMT
References: <1991Mar19.044454.24718@jato.jpl.nasa.gov> <2121@netmbx.UUCP>
Organization: The Centre for Informatics, WASEDA Univ.
Lines: 4

I don't bother setting the step rates because nearly all the drives can
move from track to track in 3 ms. What you need is to feed the STEP signal
of WD1772 to 74123N, a TTL, with C & R for 7.0 ms and let this negate the
HD-mode. Just another IC and you can forget how to set the steprate.