unsigned char ram[0x10000];
unsigned char rom_charset[0x800];
unsigned char bootcode[0x100];

typedef struct {
	unsigned short	input;
	unsigned short	output;
	unsigned short	mask;
	unsigned char	irq;
} ioxstruct;

ioxstruct ioextender[256];

int peripherals[256];

extern int memory_max;

void mem_store(int ptr,unsigned char value);
unsigned char mem_load(int ptr);