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From: slsw2@cc.usu.edu
Newsgroups: comp.os.minix
Subject: Re: Minix 1.5 on the Amiga 1000
Message-ID: <1991Jan21.133334.46714@cc.usu.edu>
Date: 21 Jan 91 19:33:34 GMT
References: <1193@stca77.stc.oz> <1201@stca77.stc.oz>
Lines: 20

In article <1201@stca77.stc.oz>, peter@stca77.stc.oz (Peter Jeremy) writes:
> The other oddity that my studies revealed is the usage of seek_delay in
> flstep_int().  Why is there a 4 step delay _before_ the heads are moved?
> From my (limited) knowledge of floppy drives, there is often a settling
> delay _after_ the heads are positioned over the correct track.  Is that
> what is intended and the code (or my reading of it) is not correct, or is
> the delay needed before the seek for some reason.

I have no idea why the floppy code waits 4 steptimes before seeking, but
drives do require some time after a write before you can move the head. On
the drive that DEC uses for it's RX23, for instance, you have to wait 585
microseconds after releasing write gate before you can step the drive.
-- 
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Roger Ivie

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