🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: comp.sys.amiga.tech
Article #9417

using Kodak 3.3M/6.6M floppy drives

#9417
From: David Lai
Date: Mon, 01 Aug 1988 18:54
23 lines
1674 bytes
I originally posted a message re: using the Kodak 6.6M floppy disk
drive in comp.sys.amiga.  I now have new information on it, and seeing
it is getting a little more technical, I've moved it to .tech.

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 timing I beleive is the same (500 ns. per bit, MFM), however the index
pulses now arrive at 100ms intervals.  The question is: can the Amiga's
internal disk controller (part of a custom chip), be able to handle
reading and writing tracks at 600rpm ... or is too
much hardware/software dependant on the slower speed (360 rpm, 166ms) drives.?
Is the index pulse used at all?  If so, will the electronics sync up
to 100ms index pulse intervals?

Can any hardware types at C-A comment?

Kodak does sell an IBM-PC controller for their drive, but the last thing I
want to resort to is using the PC bus of the 2000 (and kludging something
to interface the amiga bus to the PC bus).
-- 
	"What is a DJ if he can't scratch?"  - Uncle Jamms Army
The views expressed are those of the author, and not of Visual Edge, nor Usenet.
David Lai (vedge!lai@larry.mcrcim.mcgill.edu || ...watmath!onfcanim!vedge!lai)
Technical Details
Message-ID: <423@vedge.UUCP>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!attcan!uunet!lll-winken!lll-lcc!ames!think!bloom-beacon!mcgill-vision!odyssee!iros1!vedge!lai

Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!attcan!uunet!lll-winken!lll-lcc!ames!think!bloom-beacon!mcgill-vision!odyssee!iros1!vedge!lai
From: lai@vedge.UUCP (David Lai)
Newsgroups: comp.sys.amiga.tech,comp.sys.amiga
Subject: using Kodak 3.3M/6.6M floppy drives
Message-ID: <423@vedge.UUCP>
Date: 1 Aug 88 18:54:31 GMT
Followup-To: comp.sys.amiga.tech
Organization: Visual Edge Software, St. Laurent, Quebec
Lines: 22