Re: Commodore 2031LP and Zoomfloppy

From: Jim Brain <brain_at_jbrain.com>
Date: Mon, 4 Jun 2018 11:58:27 -0500
Message-ID: <c3047a4d-de74-8e97-9474-c8fe0fff754a@jbrain.com>
On 6/4/2018 7:58 AM, André Fachat wrote:
> Just for your info, I think I found the problem and spiro already 
> merged the fix.
>
> The problem seems to have been that there was not enough time between 
> DAV going high on the last data byte before an UNLISTEN, and the ATN 
> going low. The drive detected both in the same read and ignored the 
> valid byte as it also saw ATN going low. A small delay after sending 
> the last data byte seems to fix this problem just fine, the 2031 now 
> works fine and stable with the zoomfloppy with the updated opencbm 
> firmware.
>
> Cheers
> André
Knowing how hard it is to pry time away from other worthwhile things to 
add value to a project, please accept these thanks for the time you 
spent on this.

Jim
Received on 2018-06-04 19:01:55

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