src/hardware/parport/filelpt.h

/*
 *  Copyright (C) 2002-2020  The DOSBox Team
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

// include guard
#ifndef DOSBOX_FILELPT_H
#define DOSBOX_FILELPT_H

#include "dosbox.h"
#include "parport.h"

typedef enum { FILE_DEV, FILE_CAPTURE, FILE_APPEND } DFTYPE;

class CFileLPT : public CParallel {
public:
        CFileLPT (Bitu nr, Bit8u initIrq, CommandLine* cmd);

        ~CFileLPT();
        
        bool InstallationSuccessful;    // check after constructing. If
                                                                        // something was wrong, delete it right away.
        
        bool fileOpen;
        DFTYPE filetype = (DFTYPE)0;                    // which mode to operate in (capture,fileappend,device)
        FILE* file = NULL;
        std::string name;                       // name of the thing to open
        bool addFF;                                     // add a formfeed character before closing the file/device
        bool addLF;                                     // if set, add line feed after carriage return if not used by app

        Bit8u lastChar = 0;                             // used to save the previous character to decide wether to add LF
        const Bit16u* codepage_ptr; // pointer to the translation codepage if not null

        bool OpenFile();
        
        bool ack_polarity = false;

        Bitu Read_PR();
        Bitu Read_COM();
        Bitu Read_SR();

        Bit8u datareg = 0;
        Bit8u controlreg;

        void Write_PR(Bitu);
        void Write_CON(Bitu);
        void Write_IOSEL(Bitu);
        bool Putchar(Bit8u);

        bool autofeed = false;
        bool ack;
        unsigned int timeout = 0;
        Bitu lastUsedTick = 0;
        virtual void handleUpperEvent(Bit16u type);
};

#endif  // include guard