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MiSTer-devel / Apple-II_MiSTer

Apple II+ for MiSTer
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Don't clear the key strobe for reads of C011-C01F #13

Closed steven-a-wilson closed 3 years ago

steven-a-wilson commented 3 years ago

The original Apple II and Apple II+ clear the key strobe for any access to C010-C01F, but the IIe changed the logic so that reads of C011-C01F do not clear the strobe.

Fixes #12.

sorgelig commented 3 years ago

will it introduce incompatibility with with games for older Apple?

steven-a-wilson commented 3 years ago

I can't rule out some older games becoming incompatible, but C010 has always been the canonical address for clearing the key strobe, so incompatibilities should be rare (and would also be incompatible with original Apple IIe hardware).