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RE[21]: Some Games running on the MEGA65

Kuba Tyszko

This must have something to do with how the chip on keyrah deals with ghosting (since the c64 keyboard doesn't have any diodes).
since c64 itself has no support for ghosting at all, and assuming that the way to expose that issue doesn't show on the actual hardware - would most likely be caused by how the keyrah scans the keyboard matrix (+joysticks).
Looking at the schematic, I think the 555/556 timer might be generating the frequency - that should be easy to compare with the rate at which keyrah does it...

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