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#ifndef _CPU
#define _CPU
#include <stdint.h>
#define CARRY 0b00000001
#define ZERO 0b00000010
#define INTERRUPT_DISABLE 0b00000100
#define DECIMAL_MODE 0b00001000
#define BREAK 0b00010000
#define BREAK2 0b00100000
#define OVERFLOW 0b01000000
#define NEGATIV 0b10000000
struct CPU{
uint8_t register_a;
uint8_t register_x;
uint8_t register_y;
uint8_t status;
uint16_t pc;
uint8_t sp; // stack pointer
uint8_t memory[0xFFFF];
};
enum adressing_mode{
Immediate = 1,
ZeroPage,
ZeroPage_X,
ZeroPage_Y,
Absolute,
Absolute_X,
Absolute_Y,
Indirect_X,
Indirect_Y,
NoneAddressing,
};
uint8_t stack_pop(struct CPU *cpu);
void stack_push(struct CPU *cpu, uint8_t data);
void stack_push_u16(struct CPU *cpu, uint16_t data);
uint16_t stack_pop_u16(struct CPU *cpu);
struct CPU create_cpu();
uint8_t mem_read(struct CPU *cpu, uint16_t addr);
void mem_write(struct CPU *cpu, uint16_t addr, uint8_t data);
void load(struct CPU *cpu, uint8_t *program, int size_of_program);
void load_and_run(struct CPU *cpu, uint8_t *program, int size_of_program);
void reset_cpu(struct CPU *cpu);
void update_zero_and_negative_flags(struct CPU *cpu, uint8_t result);
void lda(struct CPU *cpu, enum adressing_mode mode);
void interpret(struct CPU *cpu);
uint16_t mem_read_u16(struct CPU *cpu, uint16_t pos);
uint16_t get_operand_address(struct CPU *cpu, enum adressing_mode mode);
void and(struct CPU *cpu, enum adressing_mode mode);
void enable_flag(struct CPU *cpu, uint8_t flag);
void disable_flag(struct CPU *cpu, uint8_t flag);
int test_flag(struct CPU *cpu, uint8_t flag);
void asl(struct CPU *cpu, enum adressing_mode mode);
void branch(struct CPU *cpu, bool cond);
void dec(struct CPU *cpu, enum adressing_mode mode);
void eor(struct CPU *cpu, enum adressing_mode mode);
void inc(struct CPU *cpu, enum adressing_mode mode);
void compare(struct CPU *cpu, enum adressing_mode mode, uint8_t comp_val);
void ldx(struct CPU *cpu, enum adressing_mode mode);
void ldy(struct CPU *cpu, enum adressing_mode mode);
void lsr(struct CPU *cpu, enum adressing_mode mode);
void ora(struct CPU *cpu, enum adressing_mode mode);
void rol(struct CPU *cpu, enum adressing_mode mode);
void ror(struct CPU *cpu, enum adressing_mode mode);
void adc(struct CPU *cpu, enum adressing_mode mode);
void stx(struct CPU *cpu, enum adressing_mode mode);
void sty(struct CPU *cpu, enum adressing_mode mode);
void bit(struct CPU *cpu, enum adressing_mode mode);
#endif
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