Minimig Board v1.0 CIA

Note that this is a simplified implementation of both CIA's, just enough to get Minimig going.


 * NOT implemented is:
 * Serial data register for CIA B(but keyboard input for CIA A is supported)
 * Port B for CIA A
 * Counter inputs for timer A and B other then 'E' clock
 * Toggling of PB6 / PB7 by timer A/B