48 lines
976 B
C
48 lines
976 B
C
#include "common.h"
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#ifndef CPU_H
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#define CPU_H
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uint32_t cpu_ram_read(uint32_t address);
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void cpu_ram_write(uint32_t address, uint32_t byte_data);
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void cpu_init();
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void cpu_reset();
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void cpu_interrupt();
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void cpu_run(long cycles);
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// CPU cycles that passed since power up
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unsigned long cpu_clock();
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typedef enum {
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carry_flag = 0x01,
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zero_flag = 0x02,
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interrupt_flag = 0x04,
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decimal_flag = 0x08,
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break_flag = 0x10,
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unused_flag = 0x20,
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overflow_flag = 0x40,
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negative_flag = 0x80
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} cpu_p_flag;
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typedef enum {
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carry_bp = 0,
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zero_bp = 1,
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interrupt_bp = 2,
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decimal_bp = 3,
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break_bp = 4,
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unused_bp = 5,
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overflow_bp = 6,
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negative_bp = 7
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} cpu_p_bp;
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typedef struct {
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uint32_t PC; // Program Counter,
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uint32_t SP; // Stack Pointer,
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uint32_t A, X, Y; // Registers
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//byte P; // Flag Register
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int P[8]; // Expended Flag Register
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} CPU_STATE;
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#endif
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