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// 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);
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