RS232.OBJ

RS232 serial routines
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int comm_init(int port, int irq, long baud, int parity,
               int wordlen, int stopbits);

void comm_exit(void);

int comm_send(char c);          Returns 0 if not clear to send
int comm_rcv(void);             Returns 0 if no character waiting

int comm_getflags(void);        Get CTS, DSR and DCD status
                               AX on return contains CTS in bit 2,
                               DSR in bit 1 and DCD in bit 0

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