/* assumes WORD = 16bit, BYTE = 8bit!! */
//typedef unsigned short WORD;
//typedef unsigned char BYTE;
typedef unsigned short WORD;
typedef unsigned char BYTE;
/* Address mask. Atari Asteroids/Deluxe use 0x7fff - * but use 0xffff for full 16 bit decode */
extern WORD addrmask;

/* pointer to the game memory map */
extern BYTE * gameImage;

/* must be called first to initialise all 6502 engines arrays */
extern void init6502( void );

/* sets all of the 6502 registers. The program counter is set from
* locations $FFFC and $FFFD masked with the above addrmask */
extern void reset6502( void );

/* run the 6502 engine for specified number of clock cycles */
extern void exec6502( int timerTicks );