mirror of
https://github.com/TomHarte/CLK.git
synced 2024-11-05 21:05:51 +00:00
66 lines
1.2 KiB
C++
66 lines
1.2 KiB
C++
//
|
|
// Atari2600.hpp
|
|
// ElectrEm
|
|
//
|
|
// Created by Thomas Harte on 14/07/2015.
|
|
// Copyright © 2015 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#ifndef Atari2600_cpp
|
|
#define Atari2600_cpp
|
|
|
|
#include "../Processors/6502/CPU6502.hpp"
|
|
#include "../Outputs/CRT.hpp"
|
|
|
|
namespace Atari2600 {
|
|
|
|
class Machine: public CPU6502::Processor<Machine> {
|
|
|
|
public:
|
|
|
|
Machine();
|
|
|
|
void perform_bus_operation(CPU6502::BusOperation operation, uint16_t address, uint8_t *value);
|
|
|
|
void set_rom(size_t length, const uint8_t *data);
|
|
|
|
Outputs::CRT *get_crt() { return _crt; }
|
|
|
|
private:
|
|
uint8_t _rom[4096], _ram[128];
|
|
uint16_t _romMask;
|
|
|
|
uint64_t _timestamp;
|
|
|
|
// the timer
|
|
unsigned int _piaTimerValue;
|
|
unsigned int _piaTimerShift;
|
|
|
|
// graphics registers
|
|
uint8_t _playField[3], _playFieldControl;
|
|
|
|
// graphics output
|
|
int _horizontalTimer;
|
|
bool _vSyncEnabled, _vBlankEnabled;
|
|
|
|
enum OutputState {
|
|
Sync,
|
|
Blank,
|
|
Pixel
|
|
};
|
|
|
|
void output_pixels(int count);
|
|
void get_output_pixel(uint8_t *pixel, int offset);
|
|
void output_state(OutputState state, uint8_t *pixel);
|
|
Outputs::CRT *_crt;
|
|
|
|
// latched output state
|
|
int _lastOutputStateDuration;
|
|
OutputState _lastOutputState;
|
|
uint8_t *_outputBuffer;
|
|
};
|
|
|
|
}
|
|
|
|
#endif /* Atari2600_cpp */
|