/* 4. Read response from data register (dog drives data lines) */ *response = inb(base + DATA_REG);

Restart your computer and enter the (usually F2, F10, or Del). Look for "Integrated Peripherals" or "Onboard I/O." Ensure the Parallel Port is set to Enabled .

#define LPT_DATA 0x378 #define LPT_STATUS 0x379 #define LPT_CTRL 0x37A