void input(char* str, int x, int y, int width) {
	const unsigned int sc013A[] = { 0xD201D002, 0x422B0009, 0x80010070, 0x013A }; // syscall to display OS cursor
	#define Cursor_SetFlashMode ((void(*)(int))sc013A)
	#define INPUT_BUFFER_SIZE 1024
	char buffer[INPUT_BUFFER_SIZE];
	int run=1, key, i, cursor=0, length=0, displayStart=0;
	buffer[0] = 0;
	Cursor_SetFlashMode(1); // enable OS cursor
	while(run) {
		if (cursor < displayStart) displayStart = cursor;
		if (cursor-displayStart >= width) displayStart = cursor-width+1;
		locate(x, y);
		PrintLine(buffer + displayStart, x+width-1); // display string
		if (length-displayStart < width) {
			locate(x+length-displayStart, y);
			Print(" "); // clear old last character in case of removal
		}
		locate(x+cursor-displayStart, y); // set position of displayed cursor
		GetKey(&key);
		switch (key) {
			case KEY_CTRL_LEFT:
				if (cursor) cursor--;
				break;
			case KEY_CTRL_RIGHT:
				if (cursor < length) cursor++;
				break;
			case KEY_CTRL_EXE:
				run = 0;
				break;
			case KEY_CTRL_DEL:
				if (cursor) {
					for (i=cursor-1 ; i<length ; i++)
						buffer[i] = buffer[i+1];
					cursor--;
					length--;
				}
				break;
			default:
				if (key >= 32 && key < 127 && length+1 < INPUT_BUFFER_SIZE) { // if ASCII char
					for (i=length ; i>cursor ; i--)
						buffer[i+1] = buffer[i];
					buffer[cursor] = key;
					cursor++;
					length++;
				}
		}
	}
	Cursor_SetFlashMode(0);
	for (i=0 ; i<=length ; i++) {
		str[i] = buffer[i];
	}
}