//	6502.h
//	Main elements of the 6502 CPU

#pragma once

#include"stdio.h"
#include"core.h"

// CPU Flags
#define flag_N 0x80 // Negative
#define flag_V 0x40	// Overflow
#define flag_B 0x10	// BRK command
#define flag_D 0x08	// Decimal mode
#define flag_I 0x04	// IRQ disable
#define flag_Z 0x02	// Zero
#define flag_C 0x01	// Carry

// Return a truth value of 1 or 0.
byte GetFlag(byte flag);

// x can be a conditional, and any non-zero value will set the flag.
void SetFlag(byte flag, int x);

// Reusable routines for setting specific flags
void SetFlag_N(byte x);
void SetFlag_V(byte x, byte y);
void SetFlag_Z(int x);

// Memory access declarations; to be defined somewhere computer-specific, not CPU-specific
byte GetMemory(address x);
void SetMemory(address x, byte y);

// Stack access and manipulation
byte GetStack();
void SetStack(byte z);