Re: Ribbon Cable

From: silverdr_at_wfmh.org.pl
Date: Tue, 17 Dec 2013 20:28:35 +0100
Message-Id: <BE6223D0-DA59-495F-9EAA-D1D2EC835B07@wfmh.org.pl>
On 2013-12-17, at 19:16, Jim Brain <brain@jbrain.com> wrote:

> 	• The exp port is not 1MHz, in my opinion.  I think the relevant "timing cycle" is the time when the 6510 gets off the bus and the VIC-II gets on the bus.  If that is 20ns (and I think it is less), then I think that defines the timing.  20ns is 50MHz...  It's probably a bit longer than that, but coupled with the above, I think problems could develop at far lower speeds.

Actually I haven’t thought of AEC related stuff, which can be more timing critical in fact. Hm, still - grabbing some scope pictures could lead us to a viable upgrade/fix for the SX.

-- 
SD!
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Received on 2013-12-17 20:02:34

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