utility.h

以ST公司CPU为核心的彩色电视机的完整源程序。

/*********************** SGS-THOMSON MICROELECTRONICS ************************
FILENAME     : UTILITY.H
VERSION      : V1.0
DATE         : JAN 1999
AUTHOR(s)    : ASHISH RUDOLA / DEEPAK DOSHI
PROCESSOR    : ST92195
DESCRIPTION  : This module contains constant definitions and function
               prototypes.
MODIFICATIONS:
   -
*****************************************************************************/
#ifndef _utilityhead_
#define _utilityhead_

#include "tv_glob.h"

unsigned int  get_value(unsigned int, unsigned int);
unsigned int  set_value(unsigned int, unsigned int);
unsigned int roll_inc(unsigned int,unsigned int);
unsigned int roll_source(unsigned int,unsigned int);
unsigned int roll_dec(unsigned int,unsigned int);
void ms_delay(void);


#define microsecond_delay(delay)\
	asm (".ifc eq %Q1-1
			swap %0
			swap %0
			swap %0
	      .endc

		  .ifc ge %Q1-1
	          ld %0,#(%Q1-1)
	          call us_delay
	      .endc
		  .endc" : "=R"(microsecond_counter) : "i"(delay));

#define millisecond_delay(delay)\
	millisecond_counter = delay;\
	ms_delay();


#endif