Y I can't compile pass using VC++ (Serial communication)

[J_expoler2]

/* Name : Sample Comm's Program - Polled Version - termpoll.c */
/* Written By : Craig Peacock <cpeacock@senet.com.au> */
/* Date : Saturday 22nd February 1997 */

/* Copyright 1997 CRAIG PEACOCK <cpeacock@senet.com.au> */

/* See **broken link removed** */
/* For More Information */

#include <dos.h>
#include <stdio.h>
#include <conio.h>

#define PORT1 0x3F8

/* Defines Serial Ports Base Address */
/* COM1 0x3F8 */
/* COM2 0x2F8 */
/* COM3 0x3E8 */
/* COM4 0x2E8 */

void main(void)
{
int c;
int ch;
outportb(PORT1 + 1 , 0); /* Turn off interrupts - Port1 */

/* PORT 1 - Communication Settings */

outportb(PORT1 + 3 , 0x80); /* SET DLAB ON */
outportb(PORT1 + 0 , 0x03); /* Set Baud rate - Divisor Latch Low Byte */
/* Default 0x03 = 38,400 BPS */
/* 0x01 = 115,200 BPS */
/* 0x02 = 57,600 BPS */
/* 0x06 = 19,200 BPS */
/* 0x0C = 9,600 BPS */
/* 0x18 = 4,800 BPS */
/* 0x30 = 2,400 BPS */
outportb(PORT1 + 1 , 0x00); /* Set Baud rate - Divisor Latch High Byte */
outportb(PORT1 + 3 , 0x03); /* 8 Bits, No Parity, 1 Stop Bit */
outportb(PORT1 + 2 , 0xC7); /* FIFO Control Register */
outportb(PORT1 + 4 , 0x0B); /* Turn on DTR, RTS, and OUT2 */

printf("\nSample Comm's Program. Press ESC to quit \n");

do { c = inportb(PORT1 + 5); /* Check to see if char has been */
/* received. */
if (c & 1) {ch = inportb(PORT1); /* If so, then get Char */
printf("%c",ch);} /* Print Char to Screen */

if (kbhit()){ch = getch(); /* If key pressed, get Char */
outportb(PORT1, ch);} /* Send Char to Serial Port */

} while (ch !=27); /* Quit when ESC (ASC 27) is pressed */
}


this initial serial port ture ?? anyone can help me pls
thank

 

[Antharax]

Why would you want to use the serial port like this?
Are you writing a DOS application?

Using the serial port in Windows can be done like this:
https://www.tetraedre.com/advanced/serial.php (for non-overlapped = blocking)
https://www.tetraedre.com/advanced/serial2.php (for overlapped = non-blocking)
(Code Examples, Documentation, ... Very good reference for serial port programming in windows!!!)

Antharax

 

[nokamil]

if you are using win 98 then inp(),_inpb(),_out(),_outb functions (instead of inport and outport)are available in conio.h so don’t need to add any lib or dll file.