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* Errata 9/19
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Remove the following two lines in the cache_read function of the cache.cpp file

	cache->cache_entry[line_num][ii].lru = cycle_count;
	cache->cache_entry[line_num][ii].valid = true;

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* Errata 9/18
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Kindly Make the following changes to the source files:

1. sim.cpp

	a. memory_c main_memory(); 
		is not needed. we created main_memory inside simulator_main().

	b. add
		uint64_t dcache_hit_count = 0;

	c. add
		out << "Total D-cache hit: " << dcache_hit_count << endl;
	to print_stats() function

2. cache.cpp

	a. Please use the updated source code for cache.cpp
	
	b. Kindly initialize 
		int lru_index = 0;
   	at the beginning of get_repl_index() function definition
  	
	c. Kindly edit cache->entry_size variable in cache_init() 		function definition to

	cache->entry_size = cache_size*1024/(block_size)/assoc;

3. memory.cpp

	a. initialize
		for(int ii=0;ii<m_dram_bank_num;ii++)
		 	dram_bank_open_row[ii] = -1;
	    in void memory_c::init_mem()

	b. in memory_c::check_piggyback(Op *mem_op)
		return true;
	    if piggyback can be done

		return false;
	    if piggyback is not possible
	
	c.  in the function definition search_matching_mshr()
	    kindly remove the second 
		return entry;
	
	d.  in the function definition search_matching_mshr_itr();
	    kindly remove the second
		return cii;