//+----------------------------------------------------------------------------
//
// File:     constants.h
//
// Module:   
//
// Synopsis: 
//
// Copyright (C) 2003 
//
// Created:  sgasch  10 Oct 2003
//
//+----------------------------------------------------------------------------

#ifndef _CONSTANTS_H_
#define _CONSTANTS_H_

//
// Constants
// 
#define YES		                   (1)
#define NO		                   (0)
#ifndef TRUE
#define TRUE		               (YES)
#endif
#ifndef FALSE
#define FALSE	 	               (NO)
#endif

#define NULL                       ((void *)0)

#define ASCII_ESC        (0x1B)
#define ASCII_BS         (0x08)

#define USER_PRIVILEGE   (3)
#define KERNEL_PRIVILEGE (0)

//
// Device driver constants
//
#define DEVICE_DRIVER_INITIALIZATION (1)
#define DEVICE_IO_CONTROL            (2)
#define DEVICE_READ                  (3)
#define DEVICE_WRITE                 (4)
#define DEVICE_DETATCH               (6)
#define DEVICE_DRIVER_SHUTDOWN       (7)
 
#endif /* _CONSTANTS_H_ */