coffeeprogrammer

zero		MACRO p1
		xor	p1,p1
		ENDM

coffeeprogrammer

#pragma once


// Define a device type for your driver (if you haven't already)
#define FILE_DEVICE_MY_COMM_DRIVER 0x8001 // Example vendor-specific device type

// Define the function code for sending the UNICODE_STRING
#define IOCTL_SEND_UNICODE_STRING \
    CTL_CODE(FILE_DEVICE_MY_COMM_DRIVER, 0x200, METHOD_BUFFERED, FILE_READ_ACCESS)
	// Function code 0x200 (you can choose a different value in the custom range)