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serialm5.lzh
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SERIAL.H
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1989-03-07
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/*
S E R I A L . H
Copyright (c) 1988, 1989 by Oklahoma Software Systems
These are the global variables, functions and "defines" used by the
SERIAL.C program. This file should also be included in any other
files which may make use of these Serial-I/O Routines.
If you have any questions you can contact me via EchoMAIL at 147/30
where I operate as a Point-mail system.
Ron Merts
*/
extern void closeserial(void);
extern void far interrupt com_int (void);
extern int getccb(void);
extern void closeserial(void);
extern void initserial (void);
extern void i_disable (void);
extern void i_enable (int pnum);
extern void resvects (void);
extern void setvects (void);
extern void comon (void);
extern int SerialOut (char x);
extern int setserial (int Port,int Speed,int Parity,int Bits,int StopBit);
extern int checkCD(void);
#define TRUE 1
#define FALSE 0
#define SBUFSIZ 0x2000
#define COM1BASE 0x3F8 /* base port for com1 */
#define COM2BASE 0x2F8 /* base port for com2 */
/* */
/* registers for serial port (not all used) */
/* */
#define TX 0 /* Transmit register */
#define RX 0 /* receive register */
#define IER 1 /* Interrupt Enable */
#define IIR 2 /* Interrupt ID */
#define LCR 3 /* Line control */
#define MCR 4 /* Modem control */
#define LSR 5 /* Line Status */
#define MSR 6 /* Modem Status */
#define DLL 0 /* Divisor Latch Low */
#define DLH 1 /* Divisor latch high */
/* */
/* Status values */
/* */
#define RCVRDY 0x01 /* Data ready flag */
#define OVRERR 0x02 /* Overrun error */
#define PRTYERR 0x04 /* Parity error */
#define FRMERR 0x08 /* Framing error */
#define BRKINT 0x10 /* Break interrupt */
#define XMTRDY 0x20 /* Transmit register empty */
#define XMTRSR 0x40 /* Tx shift register empty */
/* */
/* Status values for modem register */
/* */
#define CTS 0x10
#define DSR 0x20
#define RI 0x40
#define CD 0x80
#define DTR 0x01
#define RTS 0x02
#define OUT2 0x08
#define IMR 0x21
#define ICR 0x20
#define EOI 0x20
#define RX 0
#define IIR 2
#define RX_MASK 7
#define RX_ID 4
#define IRQ3 0xf7
#define IRQ4 0xef
#define MCR 4
#define IER 1
#define MC_INT 8
#define RX_INT 1
#define RX_MASK 7
#define RX_ID 4
#define BUFOVFL 1 /* buffer overflowed */
#define COM1 1
#define COM2 2
#define NO_PAR 0
#define EV_PAR 1
#define OD_PAR 2
extern int SError;
extern int portbase;
extern void (interrupt far *oldvects[3])();
extern char ccbuf[SBUFSIZ];
extern int startbuf;
extern int endbuf;