Epyx.h

// -----------------------------------------------------------------------------
// This file is part of VirtualC64
//
// Copyright (C) Dirk W. Hoffmann. www.dirkwhoffmann.de
// This FILE is dual-licensed. You are free to choose between:
//
//     - The GNU General Public License v3 (or any later version)
//     - The Mozilla Public License v2
//
// SPDX-License-Identifier: GPL-3.0-or-later OR MPL-2.0
// -----------------------------------------------------------------------------
 
#pragma once
 
#include "Cartridge.h"
 
namespace vc64 {
 
class Epyx final : public Cartridge {
 
    CartridgeTraits traits = {
 
        .type       = CRT_EPYX_FASTLOAD,
        .title      = "Epyx Fastload"
    };
 
    virtual const CartridgeTraits &getCartridgeTraits() const override { return traits; }
 
    // Indicates when the capacitor discharges. The Epyx cartridge utilizes a
    // capacitor to switch the ROM on and off. During normal operation, the
    // capacitor charges slowly. When it is completely charged, the ROM gets
    // disabled. When the cartridge is attached, the capacitor is discharged
    // and the ROM visible. To avoid the ROM to be disabled, the cartridge can
    // either read from ROML or I/O space 1. Both operations discharge the
    // capacitor and keep the ROM alive.
 
    Cycle cycle = 0;
 
 
    //
    // Initializing
    //
 
public:
 
    using Cartridge::Cartridge;
 
 
    //
    // Methods from CoreObject
    //
 
private:
 
    void _dump(Category category, std::ostream& os) const override;
 
 
    //
    // Methods from CoreComponent
    //
 
public:
 
    Epyx& operator= (const Epyx& other) {
 
        Cartridge::operator=(other);
 
        CLONE(cycle)
 
        return *this;
    }
    virtual void clone(const Cartridge &other) override { *this = (const Epyx &)other; }
 
    template <class T>
    void serialize(T& worker)
    {
        if (isSoftResetter(worker)) return;
 
        worker
 
        << cycle;
 
    } CARTRIDGE_SERIALIZERS(serialize);
 
    void _reset(bool hard) override;
 
    //
    // Methods from Cartridge
    //
 
public:
 
    void resetCartConfig() override;
    u8 peekRomL(u16 addr) override;
    u8 spypeekRomL(u16 addr) const override;
    u8 peekIO1(u16 addr) override;
    u8 spypeekIO1(u16 addr) const override;
    u8 peekIO2(u16 addr) override;
    u8 spypeekIO2(u16 addr) const override ;
    void execute() override;
 
private:
 
    // Discharges the cartridge's capacitor
    void dischargeCapacitor();
};
 
}