1. the following code if for real mode
2. it compiles
3. it is has correct syntax
4. it crashes
The main loop in constently looking for a new char, the int. function is called at a key press and fills the vector. The first time a key is pressed everything works, the second time everything works and after about 25-75 runs through the main loop the program freezes.
here she is:
#include <BIOS.h>
#include <Ctype.h>
#include <StdIO.h>
#include <DOS.h>
#include <Apqueue.h>
#define INTR 0011 // The Keyboard INT
#ifdef __cplusplus
#define __CPPARGS ...
#else
#define __CPPARGS
#endif
apqueue <int> KeyQue;
void interrupt ( *oldhandler)(__CPPARGS);
void interrupt handler(__CPPARGS)
{
disable();
oldhandler();
KeyQue.enqueue(bioskey(0));
enable();
}
void main(void)
{
bool Loop_Flag = true;
int key = 0;
oldhandler = getvect(INTR);
setvect(INTR, handler);
while(Loop_Flag)
{
cout<<".";
if (KeyQue.length() > 0)
{
KeyQue.dequeue(key);
if (isalnum(key & 0xFF))
printf("%c", key);
else
printf("%#02x", key);
if(char(key) == 'e') Loop_Flag = false;
}
}
setvect(INTR, oldhandler);
}