Coverage Report - uk.co.javagear.Refresh
 
Classes in this File Line Coverage Branch Coverage Complexity
Refresh
0% 
N/A 
1
 
 1  
 /*
 2  
  * Refresh.java
 3  
  *
 4  
  * This file is part of JavaGear.
 5  
  *
 6  
  * JavaGear is free software; you can redistribute it and/or modify
 7  
  * it under the terms of the GNU General Public License as published by
 8  
  * the Free Software Foundation; either version 2 of the License, or
 9  
  * (at your option) any later version.
 10  
  *
 11  
  * JavaGear is distributed in the hope that it will be useful,
 12  
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13  
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14  
  * GNU General Public License for more details.
 15  
  *
 16  
  * You should have received a copy of the GNU General Public License
 17  
  * along with JavaGear; if not, write to the Free Software
 18  
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 19  
  */
 20  
 
 21  
 package uk.co.javagear;
 22  
 
 23  
 /**
 24  
  * Zilog Z80 CPU refresh register emulation.
 25  
  *
 26  
  * @author Copyright (C) 2002-2003 Chris White
 27  
  * @version 18th January 2003
 28  
  * @see "JavaGear Final Project Report"
 29  
  */
 30  
 public final class Refresh {
 31  
     
 32  
     private int reg;
 33  
     
 34  
     private int temp;
 35  
     
 36  
     /**
 37  
      * Refresh Register Constructor.
 38  
      */
 39  0
     public Refresh() {
 40  0
         reg = 0;
 41  0
     }
 42  
     
 43  
     /**
 44  
      * Clear register.
 45  
      */
 46  
     public void clear() {
 47  0
         reg = 0;
 48  0
     }
 49  
     
 50  
     /**
 51  
      * Get value of refresh register.
 52  
      *
 53  
      * @return value stored in flag register.
 54  
      */
 55  
     public int get() {
 56  0
         return reg;
 57  
     }
 58  
     
 59  
     /**
 60  
      * Set refresh register.
 61  
      *
 62  
      * @param r value to set register (0 - 0xFF).
 63  
      */
 64  
     public void set(int r) {
 65  0
         reg = r & 0xFF;
 66  0
     }
 67  
     
 68  
     
 69  
     /**
 70  
      * Increment refresh register.
 71  
      */
 72  
     public void inc() {
 73  
         // Increment lower 6 bits
 74  
         // Preserve original 'bit 7'
 75  0
         reg = (reg & 0x80) | ((reg + 1) & 0x7F);
 76  0
     }
 77  
     
 78  
 }