Re: Calling all DOS-heads

From: Jim Brain <>
Date: Fri, 30 Mar 2012 18:33:33 -0500
Message-ID: <>
On 3/30/2012 5:02 PM, Nate Lawson wrote:
> On Mar 30, 2012, at 12:37 PM, Ingo Korb wrote:
>> Ah, so you've been playing with hidden cards all the time and expected
>> people to guess the answers you were looking for without all the
>> information they need to find those answers? Nice.
> Sorry, Jim should have given more background.
No offense, but that is your opinion.  I reserve the right to decide 
that on my own, and I disagree.

I said I was confused by the ATNA circuit, that it appeared the long 
standing description that it simply "hurried-up" the clearing of DATA 
was not entirely correct, and I didn't understand why.  What else is needed?

Yes, the issue cropped up while playing around with ideas for 
uZoomFloppy, but I see no value in describing that which offers no 
insight into the issue at hand.  This group is all about 
enabling/disabling features of the CBM environment, and seeing what 
happens (or why the feature was/is necessary).  Why should it matter why 
I disabled the ATN Trap?  I simply did, and the new behavior is 
sufficiently confusing to warrant a post here.  And, if commercial gain 
over the resolution is of concern, rest assured the answer to this 
question helps things like uZF not at all.  Whatever the reason, DATA is 
never pulled low, so understanding why won't make things like uZF work.


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Received on 2012-03-31 00:00:12

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