#ifndef _COMIO_H
#define _COMIO_H

/* function prototypes                                                       */

void TTinit(int port, long speed);/* Initialize the communications system */
int ttopen();                     /* Open a port for communications */
int ttclose( void );              /* Close the communications port */
int ttchk( void );                /* Return count of received characters */
void ttoc( unsigned char );       /* Output a character to the com port */
int ttinc( void );                /* Input a character from circular buffer */
void ttflui( void );              /* Flush circular buffer of characters */
int dobaud( long );               /* Set the baud rate for the port */
void coms( int );                 /* Establish modem data */
void serini( void );              /* Initialize the com port for interrupts */
void serrst( void );              /* Reset the com port to original settings */
void interrupt serint( void );    /* Com port receiver ISR */

#endif