mirror of
https://github.com/retro100/dosbox-wii.git
synced 2024-11-04 17:35:10 +01:00
137 lines
2.9 KiB
C++
137 lines
2.9 KiB
C++
/*
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* Copyright (C) 2002 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#if !defined __SERIALPORT_H
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#define __SERIALPORT_H
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#include <dosbox.h>
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//If it's too high you overflow terminal clients buffers i think
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#define FIFO_SIZE (1024)
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// Serial port interface //
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#define M_CTS 0x01
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#define M_DSR 0x02
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#define M_RI 0x04
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#define M_DCD 0x08
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enum INT_TYPES {
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INT_MS,
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INT_TX,
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INT_RX,
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INT_RX_FIFO,
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INT_LS,
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INT_NONE,
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};
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typedef void MControl_Handler(Bitu mc);
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class CSerial {
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public:
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// Constructor takes base port (0x3f0, 0x2f0, 0x2e0, etc.), IRQ, and initial bps //
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CSerial (Bit16u initbase, Bit8u initirq, Bit32u initbps);
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virtual ~CSerial();
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// External port functions for IOHandlers //
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void write_port(Bit32u port, Bit8u val);
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Bit8u read_port(Bit32u port);
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static void write_serial(Bit32u port,Bit8u val);
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static Bit8u read_serial(Bit32u port);
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void SetMCHandler(MControl_Handler * mcontrol);
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/* Allow the modem to change the modem status bits */
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void setmodemstatus(Bit8u status);
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Bit8u getmodemstatus(void);
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Bit8u getlinestatus(void);
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void checkint(void);
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void raiseint(INT_TYPES type);
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void lowerint(INT_TYPES type);
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/* Access to the receive fifo */
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Bitu rx_free();
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void rx_addb(Bit8u byte);
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void rx_adds(Bit8u * data,Bitu size);
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Bitu rx_size();
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Bit8u rx_readb(void);
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/* Access to the transmit fifo */
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Bitu tx_free();
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void tx_addb(Bit8u byte);
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Bitu tx_size();
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Bit8u tx_readb(void);
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// These variables maintain the status of the serial port
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Bit16u base;
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Bit16u irq;
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Bit32u bps;
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bool FIFOenabled;
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Bit16u FIFOsize;
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private:
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void setdivisor(Bit8u dmsb, Bit8u dlsb);
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void checkforirq(void);
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struct {
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Bitu used;
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Bitu pos;
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Bit8u data[FIFO_SIZE];
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} rx_fifo,tx_fifo;
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struct {
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Bitu requested;
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Bitu enabled;
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INT_TYPES active;
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} ints;
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Bitu rx_lastread;
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Bit8u irq_pending;
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Bit8u scratch;
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Bit8u dlab;
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Bit8u divisor_lsb;
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Bit8u divisor_msb;
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Bit8u wordlen;
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Bit8u dtr;
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Bit8u rts;
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Bit8u out1;
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Bit8u out2;
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Bit8u local_loopback;
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Bit8u linectrl;
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Bit8u intid;
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Bit8u ierval;
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Bit8u mstatus;
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Bit8u txval;
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Bit8u timeout;
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MControl_Handler * mc_handler;
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char remotestr[4096];
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};
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// This function returns the CSerial objects for ports 1-4 //
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CSerial *getComport(Bitu portnum);
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#endif
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