Article View: comp.sys.atari.st
Article #18212Re: Setting Floppy Seek Rate in all TOS versions
From: Y.Tsuji Y.Tsuji shagaku
Date: Sun, 24 Mar 1991 23:39
Date: Sun, 24 Mar 1991 23:39
4 lines
897 bytes
897 bytes
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.
Technical Details
Message-ID:
<5329@wucc.waseda.ac.jp>Path:
arc1-ca.pugleaf.net!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!ytsujiReferences:
<1991Mar19.044454.24718@jato.jpl.nasa.gov> <2121@netmbx.UUCP>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!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