Re: VC1581... almost...

From: André Fachat (
Date: 2006-11-26 21:02:39

-------- Original-Nachricht --------
Datum: Sun, 26 Nov 2006 19:37:59 +0100
Von: Wolfgang Moser <>
Betreff: Re: VC1581... almost...

> Hello André,
> what's the difference to Mika Leinonen's 1581
> "replica" board, the DCN-2692 floppy controller ?

I did not know about this one. Anyway, my goal was to
implement it using my CS/A65 bus system, so you can plug
together boards as you want to. Also I wanted to use 
a standard PC drive and cable.

You can find it (some time soon, I have notified the 
maintained to publish the new version now) on

However, using a small program to M-R the drive controller 
return codes and the CIA register, and reading the ROM 
listings I found the problem: The pull-down resistor for
the drive ready was to large, so the CPU thought the 
drive was never ready (well, as the drive error message
already said ;-).

Thanks for your comments anyway.


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