Path: utzoo!utgpu!attcan!uunet!cbmvax!bryce
From: bryce@cbmvax.UUCP (Bryce Nesbitt)
Newsgroups: comp.sys.amiga.tech
Subject: Re: using Kodak 3.3M/6.6M floppy drives
Message-ID: <4422@cbmvax.UUCP>
Date: 4 Aug 88 23:12:53 GMT
References: <423@vedge.UUCP>
Reply-To: bryce@commdore.COM (Bryce Nesbitt)
Organization: Commodore Technology, West Chester, PA
Lines: 29

In article <423@vedge.UUCP> lai@vedge.UUCP (David Lai) writes:
>The drive looks like it'll work with the amiga except for 1 thing, the
>motor speed is 600 RPM (about twice the speed of the amiga's 3.5").

The data rate is the important factor.

>The data timing I beleive is the same (500 ns. per bit, MFM)...

That number looks suspicious.  If the Kodak is the same data
rate (250K BPS, 250ns pulses, 4 microseconds between pulses)
then you are in business.  In this case the Amiga would see it
as a 90mm (3.5") drive with lots of tracks.

>however the index pulses now arrive at 100ms intervals.
>Is the index pulse used at all?

No.  Not for what you want.

>How much hardware/software dependant on the slower speed (360 rpm, 166ms)
>drives.?

That's 300 rpm, 200ms drives.


>Can any hardware types at C-A comment?

Ooops!  I'm a software type, take that all back :-)

>David Lai (vedge!lai@larry.mcrcim.mcgill.edu || ...watmath!onfcanim!vedge!lai)