Talk:APU Sweep

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Revision as of 00:45, 10 May 2011 by Quietust (talk | contribs) (an amusing thing I noticed a while ago - the actual reason why the sweep units in the 2 square channels behave slightly differently)
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Interesting fact: the 2 square channels are almost perfect mirror images of each other on the silicon, with one single difference: where one part of the 2nd channel's sweep unit takes as an input the (inverted) state of the Negate flag, the equivalent input in the 1st channel's sweep unit is hardwired to +5V. Said input is almost definitely the Carry Input flag, and it explains the difference in behavior. --Quietust 00:45, 10 May 2011 (UTC)

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