aiie/apple/pia6821.h
2020-12-29 09:12:33 -05:00

32 lines
413 B
C++

#ifndef _PIA6821_H
#define _PIA6821_H
#include <stdint.h>
// http://webpages.charter.net/coinopcauldron/piaarticle.html
#define DDRA 0
#define CTLA 1
#define DDRB 2
#define CTLB 3
class PIA6821 {
public:
PIA6821();
~PIA6821();
uint8_t read(uint8_t addr);
private:
uint8_t porta, portb;
uint8_t ddra, ddrb;
uint8_t cra, crb; // control registers
/*
2 ports - porta, portb
*/
};
#endif