Re: Drive disconnect switch for SX 64

From: Nate Lawson <>
Date: Tue, 30 Nov 2010 17:32:06 -0800
Message-ID: <>
On 11/30/2010 1:20 PM, Pete Rittwage wrote:
> On Tue, November 30, 2010 4:06 pm, Nate Lawson wrote:
>> Jim's analysis is good. I've found that with one drive that is off but
>> connected to the IEC bus, it doesn't drag the idle level too low (3.3v
>> high versus 5v).
>> But it's better to always operate an IEC bus with all devices powered on
>> and counting each attached device as a load (even if the device isn't
>> talking). Don't try more than 4 drives + 1 printer as a max load on a
>> single bus, and if using more than 2 devices, try to keep the cable
>> length as short as possible.
> And some fast loaders will not function with any other devices on the bus
> except a single disk drive, correct?

Yes, anything that touches ATN. And the conversation goes full-circle.  :)


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Received on 2010-12-01 02:00:03

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