enum {
	Negative = 1<<7,
	Overflow = 1<<6,
	Break = 1<<4,
	Decimal = 1<<3,
	Interrupt = 1<<2,
	Zero = 1<<1,
	Carry = 1
};

extern u8int	*mem;
extern u8int	*romptr;
extern u8int	rA, rS, rX, rY, rP;
extern u16int	pc;