NCR RealPOS 30, Руководство пользователя

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Chapter 6: Cash Drawer Interface 6-5
Code Example
#include<dos.h>
#include<conio.h>
#define DigitalPort 0x200
char title[] =
" First Cash Box Testing Program \n" ;
char line[] =
" ========================================== \n" ;
void main()
{
int PortStatus;
while(1)
{
if((inportb(Digi1)&0x01)==0)
{
printf("\n\n\n\n\n");
printf("\t\t\tCash box is OPEN status.");
printf("\n\n");
printf("\t\t\tPlease close cash box.");
while((inportb(Digi1)&0x01)==0)
;
}
clrscr(); //clear screen
printf("\n\n\n\n");
printf(line);
printf(title);
printf(line);
printf("\n\n\n\n\n\n\n\n");
printf("\tPress any key to open the cash box (ESC to
quit)");
if(getch()==27)
break;
clrscr();