Subversion Repositories s80186

// Copyright Jamie Iles, 2017

//

// This file is part of s80x86.

//

// s80x86 is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// s80x86 is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with s80x86.  If not, see <http://www.gnu.org/licenses/>.

#pragma once

#include <deque>

#include <iostream>

#include <termios.h>

#include <unistd.h>

#include <stdexcept>

#include <boost/serialization/list.hpp>

#include <boost/serialization/deque.hpp>

#include <boost/serialization/string.hpp>

#include <boost/serialization/version.hpp>

#include "UART.h"

#include "CPU.h"

class RawTTY

{

public:

    RawTTY()

    {

        if (tcgetattr(STDIN_FILENO, &old_termios))

            throw std::runtime_error("Failed to get termios");

        auto termios = old_termios;

        cfmakeraw(&termios);

        termios.c_cc[VMIN] = 0;

        termios.c_cc[VTIME] = 0;

        if (tcsetattr(STDIN_FILENO, TCSANOW, &termios))

            throw std::runtime_error("Failed to set new termios");

    }

    ~RawTTY()

    {

        tcsetattr(STDIN_FILENO, TCSANOW, &old_termios);

    }

private:

    struct termios old_termios;

};

class UART : public IOPorts

{

public:

    UART();

    void write8(uint16_t port_num, unsigned offs, uint8_t v);

    void write16(uint16_t port_num, uint16_t v);

    uint8_t read8(uint16_t port_num, unsigned offs);

    uint16_t read16(uint16_t port_num);

    void add_char(int c);

private:

    RawTTY raw_tty;

    std::deque<uint8_t> charbuf;

    friend class boost::serialization::access;

    template <class Archive>

    void serialize(Archive &ar, const unsigned int __unused version)

    {

        // clang-format off

        ar & charbuf;

        // clang-format on

    }

};