Package lab06

Class Memory

java.lang.Object
lab06.Memory
public class Memory
extends java.lang.Object
Model a RAM memory for Pippin. A Pippin memory is simply an indexed array of data values. The index is treated as the memory address. Each value at each address may be written - replaced by a new integer value, or read, return the value at that location.
Author:
cs140

  • Constructor Summary

    Constructors
    Constructor Description
    Memory​(int length)
    Construct a new Pippin Memory whose size is specified by the parameter.

  • Method Summary

    Modifier and Type Method Description
    void dump​(java.lang.String title)
    Prints out the title and the contents of the entire memory.
    void dump​(java.lang.String title, int start, int stop)
    Prints out the title and the contents of memory from the specified start location to the specified stop location.
    int get​(int loc)
    Retrieves and returns the value at the specified location.
    void set​(int loc, int val)
    Writes the val parameter to the location in the loc parameter.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Memory

      public Memory​(int length)
      Construct a new Pippin Memory whose size is specified by the parameter.
      Parameters:
      length - number of locations in the memory

  • Method Details

    • set

      public void set​(int loc, int val)
      Writes the val parameter to the location in the loc parameter. If the location is invalid, prints an error message and does not update memory.
      Parameters:
      loc - index into the memory to write a new value
      val - value to write to the specified location

    • get

      public int get​(int loc)
      Retrieves and returns the value at the specified location. If the loc is not valid, writes a message and returns a -1 value
      Parameters:
      loc - index into the memory to write a new value
      Returns:
      the value at the specified location

    • dump

      public void dump​(java.lang.String title)
      Prints out the title and the contents of the entire memory.
      Parameters:
      title - a String to identify this dump of memory

    • dump

      public void dump​(java.lang.String title, int start, int stop)
      Prints out the title and the contents of memory from the specified start location to the specified stop location.
      Parameters:
      title - a String to identify this dump of memory
      start - index of the first location to dump
      stop - index of the last location to dump