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fixed tab alignment for better readability
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ArthurFerreira2 2021-07-07 19:56:19 +02:00 committed by GitHub
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commit 92c895243f
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2 changed files with 1165 additions and 993 deletions
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puce65c02.cpp
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puce65c02.h
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@ -1,6 +1,5 @@
/*
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)
@ -10,7 +9,7 @@
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
furnished to do so, subject to the following conditions :
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
@ -24,17 +23,12 @@
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
@ -46,45 +40,49 @@ typedef enum {run, step, stop, wait} status;
#define OFLOW 0x40
#define SIGN 0x80
typedef struct Pbits_t {
uint8_t C : 1; // Carry
uint8_t Z : 1; // Zero
uint8_t I : 1; // Interupt disabled
uint8_t D : 1; // Decimal
uint8_t B : 1; // Break
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
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;
Pbits bits;
} P; // Processor Status
struct {
uint8_t C : 1; // Carry
uint8_t Z : 1; // Zero
uint8_t I : 1; // Interupt disabled
uint8_t D : 1; // Decimal
uint8_t B : 1; // Break
uint8_t U : 1; // Undefined
uint8_t V : 1; // Overflow
uint8_t S : 1; // Sign
};
} P; // Processor Status
public:
unsigned long long int ticks;
status state;
puce65c02();
puce65c02() { ticks = 0; RST(); }
puce65c02(uint16_t address) { ticks = 0; RST(); PC = address; }
~puce65c02();
uint16_t getPC() { return PC; };
void setPC(uint16_t address) { PC = address; };
void RST();
void IRQ();
void NMI();
uint16_t exec(unsigned long long int cycleCount);
uint16_t getPC();
void setPC(uint16_t address);
#if __TESTS__
void dasm(uint16_t address);
void printRegs();
int getRegs(char* buffer);
int getCode(uint16_t address, char* buffer, int size, int numLines);
#endif
};
#endif