Re: 1570 disk drive DEVICE NOT PRESENT ERROR

From: Spiro Trikaliotis <*ml-cbmhackers_at_trikaliotis.net*> Date: Tue, 10 Jul 2012 21:45:08 +0200 Message-ID: <20120710194508.GA25913@trikaliotis.net> · ml-cbmhackers_at_trikaliotis.net

Hello,

* On Tue, Jul 10, 2012 at 09:17:54PM +0200 Gerrit Heitsch wrote:
> On 07/10/2012 09:08 PM, Anders Carlsson wrote:

> The 6526 handles only the burst mode with its shift register, it's
> otherwise unused. So normal IEC is done with one of the 65C22.

Correct.

> The 1570 uses the same PCB as the 1571.

That's why I would suggest Ray Carlsen's article about the 1571 as a
starting point for debugging the problem:

  http://personalpages.tds.net/~rcarlsen/cbm/1571/

  especially

  http://personalpages.tds.net/~rcarlsen/cbm/1571/1571diag.txt

HTH,
Spiro.

-- 
Spiro R. Trikaliotis
http://www.trikaliotis.net/

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