biosprint

函数名: biosprint

功 能: 直接使用BIOS服务的打印机I/O

用 法: int biosprint(int cmd, int byte, int port);

程序例:

#include <stdio.h>

#include <conio.h>

#include <bios.h>

int main(void)

{

#define STATUS 2 /* printer status command */

#define PORTNUM 0 /* port number for LPT1 */

int status, abyte=0;

printf("Please turn off your printer. Press any key to continue

");

getch();

status = biosprint(STATUS, abyte, PORTNUM);

if (status & 0x01)

printf("Device time out.

");

if (status & 0x08)

printf("I/O error.

");

if (status & 0x10)

printf("Selected.

");

if (status & 0x20)

printf("Out of paper.

");

if (status & 0x40)

printf("Acknowledge.

");

if (status & 0x80)

printf("Not busy.

");

return 0;

}