Re: Drive disconnect switch for SX 64

From: Nate Lawson <>
Date: Wed, 01 Dec 2010 09:09:44 -0800
Message-ID: <>
On 11/30/2010 10:46 PM, Niklas Ramsberg wrote:
> On Tue, Nov 30, 2010 at 6:54 PM, Jim Brain <> wrote:
>> Cutting ATN does exactly as Marko notes, the drive is "passive".  But, it is
>> not truly invisible, at least from an electrical perspective.
> My main reason for disconnecting the drive is to be able to use my
> 1541 Ultimate to run demos and other software that doesn't like to see
> two drives on the bus. Will this work if I just cut ATN?

Yes, since the SX-64 will always power-on the internal drive. It will
just never see ATN signaled, so it will stop responding to device 8
requests. Then the 1541U can respond.


       Message was sent through the cbm-hackers mailing list
Received on 2010-12-01 18:00:09

Archive generated by hypermail 2.2.0.