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Fixed tab alignment for better readability
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ArthurFerreira2 2021-07-07 20:07:43 +02:00 committed by GitHub
parent 423c72ce90
commit 250aae9430
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4 changed files with 1554 additions and 1726 deletions
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puce65c02.cpp
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puce65c02.h
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@ -1,5 +1,6 @@
/*
puce65c02, a WDC 65c02 cpu emulator, based on puce6502 by the same author
Last modified 1st of July 2021
Copyright (c) 2021 Arthur Ferreira (arthur.ferreira2@gmail.com)
@ -23,12 +24,17 @@
THE SOFTWARE.
*/
/*
This version is slightly modified for reinette IIe, a french Apple IIe
emulator using SDL2 (https://github.com/ArthurFerreira2/reinette-IIe).
Please download the latest version from
https://github.com/ArthurFerreira2/puce65c02
*/
#ifndef _PUCE65C02_H
#define _PUCE65C02_H
#include <cstdint>
typedef enum {run, step, stop, wait} status;
#define CARRY 0x01
@ -40,18 +46,7 @@ typedef enum {run, step, stop, wait} status;
#define OFLOW 0x40
#define SIGN 0x80
class puce65c02 {
public:
unsigned long long int ticks;
// private:
status state;
uint16_t PC; // Program Counter
uint8_t A, X, Y, SP; // Accumulator, X and y indexes and Stack Pointer
union {
uint8_t byte;
struct {
typedef struct Pbits_t {
uint8_t C : 1; // Carry
uint8_t Z : 1; // Zero
uint8_t I : 1; // Interupt disabled
@ -60,29 +55,36 @@ public:
uint8_t U : 1; // Undefined
uint8_t V : 1; // Overflow
uint8_t S : 1; // Sign
};
} Pbits;
class puce65c02 {
private:
uint16_t PC; // Program Counter
uint8_t A, X, Y, SP; // Accumulator, X and y indexes and Stack Pointer
union {
uint8_t byte;
Pbits bits;
} P; // Processor Status
public:
puce65c02() { ticks = 0; RST(); }
puce65c02(uint16_t address) { ticks = 0; RST(); PC = address; }
~puce65c02();
unsigned long long int ticks;
uint16_t getPC() { return PC; };
void setPC(uint16_t address) { PC = address; };
status state;
puce65c02();
~puce65c02();
void RST();
void IRQ();
void NMI();
uint16_t exec(unsigned long long int cycleCount);
#if __TESTS__
void dasm(uint16_t address);
void printRegs();
uint16_t getPC();
void setPC(uint16_t address);
int getRegs(char* buffer);
int getCode(uint16_t address, char* buffer, int size, int numLines);
#endif
};
#endif