#pragma once

typedef
unsigned char
byte;

typedef
unsigned short
address;

extern byte acc;
extern byte X;
extern byte Y;
extern byte P;
extern byte S;
extern address PC;
extern byte* Memory;
extern const byte ROM[];


enum Addressing
{
	eImmediate,
	eAccumulator,
	eZeroPage,
	eZeroPageIndexedX,
	eZeroPageIndexedY,
	eAbsolute,
	eAbsoluteIndexedX,
	eAbsoluteIndexedY,
	eIndexedIndirect,
	eIndirectIndexed,
	eImplied,
	eIndirectAbsolute,
	eRelative
};
typedef
int
Addressing;

typedef
struct AddData
{
	int cycles;
	int length;
	address add;
	byte value;
}
AddData;



// GetMemory and SetMemory are declared here, but defined in apple.c
// This is because memory access of particular memory locations is influenced by the Apple I's specific setup, not by the CPU alone.
byte GetMemory(address x);
void SetMemory(address x, byte y);


extern void *current_instruction;
extern AddData idata;
extern void (*func)(Addressing, address);