#include <windows.h> #include <stdio.h> // Assuming inpout32.h / dll is loaded #define DONGLE_PORT 0x378 // LPT1 base address
// Simple dongle handshake: write value, read back, compare int check_dongle() { __outbyte(DONGLE_PORT, 0xAA); // write pattern Sleep(10); unsigned char ret = __inbyte(DONGLE_PORT); return (ret == 0xAA); } parallel port dog driver
int main() { if (check_dongle()) { printf("Dongle present.\n"); } else { printf("Dongle missing or wrong.\n"); } return 0; } ⚠️ Requires administrative rights and disabling driver signature enforcement on 64-bit Windows (or using a signed kernel driver). Below is a highly simplified KMDF driver fragment for parallel port dongle I/O. #include <windows