Re: 1570 disk drive DEVICE NOT PRESENT ERROR

From: Anders Carlsson <>
Date: Tue, 10 Jul 2012 21:08:52 +0200
Message-ID: <558E9718EFCC4795A79438AB75CCAF09@zapac9ea002038>
I would suspect either a 6522 VIA or 6526 CIA. I saw the 1571 has two 6522 
and one 6526, not sure about the 1570 but I suppose something similar? I 
didn't quite figure out which one handles the IEC communcation with the 
computer, but I think it is the 6526?

Can you read the error channel? Which computer are you using, e.g. a C64 or 
C128? I suppose as you get DEVICE NOT PRESENT, it won't even work to read 
the error channel.

Best regards

Anders Carlsson

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Received on 2012-07-10 20:00:04

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