Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!mcsun!ukc!axion!galadriel!jon
From: jon@galadriel.bt.co.uk (Jon Hopkins)
Newsgroups: comp.sys.amiga.hardware
Subject: A3000 floppy p[roblems.
Message-ID: <1991May24.084816.16737@galadriel.bt.co.uk>
Date: 24 May 91 08:48:16 GMT
Organization: RT611 BTRL, Martlesham Heath, Ipswich, UK
Lines: 24


I have just upgraded my system from an A500 to an A3000/25/100. Everything
workes fine except my external disc drive which is a combined 3.5 and 5.25"
unit (the 5.25" drive appears to the Amiga as a 3.5" 880k drive).  The 3000
does not recognise either drive.  I have tried changing the drive select
lines to work with units 2 & 3 instead of 1 & 2, since the sel1 line seems
to be reserved for a second internal drive, but still no joy.

The real question is what has changed between the 500 & 3000 in the way of
drive timings, and could this affect the way the drive is recognised?
(How is the drive recognised anyway???)

The drive in question is made by Power Computing, if this is any help.

If anyone has any ideas for circuits which actually work on A3000 this might
help as well.

	Thanks in advance,
		Jon.


============================================================================
Email: Jon@galadriel.bt.co.uk
Snail: British Telecom Research labs, Martlesham Heath, Ipswich, Suffolk, UK