dosbox-wii/include/serialport.h
2009-05-02 21:43:00 +00:00

137 lines
2.9 KiB
C++

/*
* Copyright (C) 2002 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 Library 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined __SERIALPORT_H
#define __SERIALPORT_H
#include <dosbox.h>
//If it's too high you overflow terminal clients buffers i think
#define FIFO_SIZE (1024)
// Serial port interface //
#define M_CTS 0x01
#define M_DSR 0x02
#define M_RI 0x04
#define M_DCD 0x08
enum INT_TYPES {
INT_MS,
INT_TX,
INT_RX,
INT_RX_FIFO,
INT_LS,
INT_NONE,
};
typedef void MControl_Handler(Bitu mc);
class CSerial {
public:
// Constructor takes base port (0x3f0, 0x2f0, 0x2e0, etc.), IRQ, and initial bps //
CSerial (Bit16u initbase, Bit8u initirq, Bit32u initbps);
virtual ~CSerial();
// External port functions for IOHandlers //
void write_port(Bit32u port, Bit8u val);
Bit8u read_port(Bit32u port);
static void write_serial(Bit32u port,Bit8u val);
static Bit8u read_serial(Bit32u port);
void SetMCHandler(MControl_Handler * mcontrol);
/* Allow the modem to change the modem status bits */
void setmodemstatus(Bit8u status);
Bit8u getmodemstatus(void);
Bit8u getlinestatus(void);
void checkint(void);
void raiseint(INT_TYPES type);
void lowerint(INT_TYPES type);
/* Access to the receive fifo */
Bitu rx_free();
void rx_addb(Bit8u byte);
void rx_adds(Bit8u * data,Bitu size);
Bitu rx_size();
Bit8u rx_readb(void);
/* Access to the transmit fifo */
Bitu tx_free();
void tx_addb(Bit8u byte);
Bitu tx_size();
Bit8u tx_readb(void);
// These variables maintain the status of the serial port
Bit16u base;
Bit16u irq;
Bit32u bps;
bool FIFOenabled;
Bit16u FIFOsize;
private:
void setdivisor(Bit8u dmsb, Bit8u dlsb);
void checkforirq(void);
struct {
Bitu used;
Bitu pos;
Bit8u data[FIFO_SIZE];
} rx_fifo,tx_fifo;
struct {
Bitu requested;
Bitu enabled;
INT_TYPES active;
} ints;
Bitu rx_lastread;
Bit8u irq_pending;
Bit8u scratch;
Bit8u dlab;
Bit8u divisor_lsb;
Bit8u divisor_msb;
Bit8u wordlen;
Bit8u dtr;
Bit8u rts;
Bit8u out1;
Bit8u out2;
Bit8u local_loopback;
Bit8u linectrl;
Bit8u intid;
Bit8u ierval;
Bit8u mstatus;
Bit8u txval;
Bit8u timeout;
MControl_Handler * mc_handler;
char remotestr[4096];
};
// This function returns the CSerial objects for ports 1-4 //
CSerial *getComport(Bitu portnum);
#endif