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CLK/Machines/Electron/Electron.hpp

157 lines
4.9 KiB
C++

//
// Electron.hpp
// Clock Signal
//
// Created by Thomas Harte on 03/01/2016.
// Copyright © 2016 Thomas Harte. All rights reserved.
//
#ifndef Electron_hpp
#define Electron_hpp
#include "../../Processors/6502/6502.hpp"
#include "../../Storage/Tape/Tape.hpp"
#include "../../ClockReceiver/ClockReceiver.hpp"
#include "../ConfigurationTarget.hpp"
#include "../CRTMachine.hpp"
#include "../Typer.hpp"
#include "Interrupts.hpp"
#include "Plus3.hpp"
#include "Speaker.hpp"
#include "Tape.hpp"
#include "Video.hpp"
#include <cstdint>
#include <vector>
namespace Electron {
enum ROMSlot: uint8_t {
ROMSlot0 = 0,
ROMSlot1, ROMSlot2, ROMSlot3,
ROMSlot4, ROMSlot5, ROMSlot6, ROMSlot7,
ROMSlotKeyboard = 8, ROMSlot9,
ROMSlotBASIC = 10, ROMSlot11,
ROMSlot12, ROMSlot13, ROMSlot14, ROMSlot15,
ROMSlotOS, ROMSlotDFS, ROMSlotADFS
};
enum Key: uint16_t {
KeySpace = 0x0000 | 0x08, KeyCopy = 0x0000 | 0x02, KeyRight = 0x0000 | 0x01,
KeyDelete = 0x0010 | 0x08, KeyReturn = 0x0010 | 0x04, KeyDown = 0x0010 | 0x02, KeyLeft = 0x0010 | 0x01,
KeyColon = 0x0020 | 0x04, KeyUp = 0x0020 | 0x02, KeyMinus = 0x0020 | 0x01,
KeySlash = 0x0030 | 0x08, KeySemiColon = 0x0030 | 0x04, KeyP = 0x0030 | 0x02, Key0 = 0x0030 | 0x01,
KeyFullStop = 0x0040 | 0x08, KeyL = 0x0040 | 0x04, KeyO = 0x0040 | 0x02, Key9 = 0x0040 | 0x01,
KeyComma = 0x0050 | 0x08, KeyK = 0x0050 | 0x04, KeyI = 0x0050 | 0x02, Key8 = 0x0050 | 0x01,
KeyM = 0x0060 | 0x08, KeyJ = 0x0060 | 0x04, KeyU = 0x0060 | 0x02, Key7 = 0x0060 | 0x01,
KeyN = 0x0070 | 0x08, KeyH = 0x0070 | 0x04, KeyY = 0x0070 | 0x02, Key6 = 0x0070 | 0x01,
KeyB = 0x0080 | 0x08, KeyG = 0x0080 | 0x04, KeyT = 0x0080 | 0x02, Key5 = 0x0080 | 0x01,
KeyV = 0x0090 | 0x08, KeyF = 0x0090 | 0x04, KeyR = 0x0090 | 0x02, Key4 = 0x0090 | 0x01,
KeyC = 0x00a0 | 0x08, KeyD = 0x00a0 | 0x04, KeyE = 0x00a0 | 0x02, Key3 = 0x00a0 | 0x01,
KeyX = 0x00b0 | 0x08, KeyS = 0x00b0 | 0x04, KeyW = 0x00b0 | 0x02, Key2 = 0x00b0 | 0x01,
KeyZ = 0x00c0 | 0x08, KeyA = 0x00c0 | 0x04, KeyQ = 0x00c0 | 0x02, Key1 = 0x00c0 | 0x01,
KeyShift = 0x00d0 | 0x08, KeyControl = 0x00d0 | 0x04, KeyFunc = 0x00d0 | 0x02, KeyEscape = 0x00d0 | 0x01,
KeyBreak = 0xfffd,
};
/*!
@abstract Represents an Acorn Electron.
@discussion An instance of Electron::Machine represents the current state of an
Acorn Electron.
*/
class Machine:
public CPU::MOS6502::Processor<Machine>,
public CRTMachine::Machine,
public Tape::Delegate,
public Utility::TypeRecipient,
public ConfigurationTarget::Machine {
public:
Machine();
void set_rom(ROMSlot slot, std::vector<uint8_t> data, bool is_writeable);
void set_key_state(uint16_t key, bool isPressed);
void clear_all_keys();
inline void set_use_fast_tape_hack(bool activate) { use_fast_tape_hack_ = activate; }
// to satisfy ConfigurationTarget::Machine
void configure_as_target(const StaticAnalyser::Target &target);
// to satisfy CPU::MOS6502::Processor
Cycles perform_bus_operation(CPU::MOS6502::BusOperation operation, uint16_t address, uint8_t *value);
void flush();
// to satisfy CRTMachine::Machine
virtual void setup_output(float aspect_ratio);
virtual void close_output();
virtual std::shared_ptr<Outputs::CRT::CRT> get_crt();
virtual std::shared_ptr<Outputs::Speaker> get_speaker();
virtual void run_for(const Cycles &cycles) { CPU::MOS6502::Processor<Machine>::run_for(cycles); }
// to satisfy Tape::Delegate
virtual void tape_did_change_interrupt_status(Tape *tape);
// for Utility::TypeRecipient
virtual int get_typer_delay();
virtual int get_typer_frequency();
uint16_t *sequence_for_character(Utility::Typer *typer, char character);
private:
inline void update_display();
inline void queue_next_display_interrupt();
inline void update_audio();
inline void signal_interrupt(Interrupt interrupt);
inline void clear_interrupt(Interrupt interrupt);
inline void evaluate_interrupts();
// Things that directly constitute the memory map.
uint8_t roms_[16][16384];
bool rom_write_masks_[16];
uint8_t os_[16384], ram_[32768];
std::vector<uint8_t> dfs_, adfs_;
// Paging
ROMSlot active_rom_;
bool keyboard_is_active_, basic_is_active_;
// Interrupt and keyboard state
uint8_t interrupt_status_, interrupt_control_;
uint8_t key_states_[14];
// Counters related to simultaneous subsystems
Cycles cycles_since_display_update_;
Cycles cycles_since_audio_update_;
int cycles_until_display_interrupt_;
Interrupt next_display_interrupt_;
VideoOutput::Range video_access_range_;
// Tape
Tape tape_;
bool use_fast_tape_hack_;
bool fast_load_is_in_data_;
// Disk
std::unique_ptr<Plus3> plus3_;
bool is_holding_shift_;
int shift_restart_counter_;
// Outputs
std::unique_ptr<VideoOutput> video_output_;
std::shared_ptr<Speaker> speaker_;
bool speaker_is_enabled_;
};
}
#endif /* Electron_hpp */