gui_7segdisplay.java

這是一個8051的模擬器 以java寫成

import javax.swing.*;

import java.awt.*;

/**
 * Projet de langage JAVA IFITEP 3 2005 - Simulateur 8051 
 * <p> 
 * Simulation d'un composant graphique du type afficheur 7 segments.
 * Un bus d'un largueur de 4 bits est param鑤rable. Ce qui permet d'affficher
 * tous les chiffres de la base 16.
 *  
 * @author Matthieu SIMON
 * @version 1.0 du 28/06/05
 */
public class GUI_7SegDisplay extends JFrame  {
	
	/*
	 * 7 Segment Display :
	 * 
	 *   F A B
	 *   F   B
	 *   F G B
	 *   E G C
	 *   E   C
	 *   E D C
	 * 
	 * N -> A | B | C | D | E | F | G	 
	 * -------|---|---|---|---|---|---
	 * 0 -> 1 | 1 | 1 | 1 | 1 | 1 | 0  -> 7E
	 * 1 -> 0 | 1 | 1 | 0 | 0 | 0 | 0  -> 30
	 * 2 -> 1 | 1 | 0 | 1 | 1 | 0 | 1  -> 6D
	 * 3 -> 1 | 1 | 1 | 1 | 0 | 0 | 1  -> 79
	 * 4 -> 0 | 1 | 1 | 0 | 0 | 1 | 1  -> 33
	 * 5 -> 1 | 0 | 1 | 1 | 0 | 1 | 1  -> 5B
	 * 6 -> 1 | 0 | 1 | 1 | 1 | 1 | 1  -> 5F
	 * 7 -> 1 | 1 | 1 | 0 | 0 | 0 | 0  -> 70
	 * 8 -> 1 | 1 | 1 | 1 | 1 | 1 | 1  -> 7F
	 * 9 -> 1 | 1 | 1 | 1 | 0 | 1 | 1  -> 7B
	 * A -> 1 | 1 | 1 | 0 | 1 | 1 | 1  -> 77
	 * B -> 0 | 0 | 1 | 1 | 1 | 1 | 1  -> 1F
	 * C -> 1 | 0 | 0 | 1 | 1 | 1 | 0  -> 4E
	 * D -> 0 | 1 | 1 | 1 | 1 | 0 | 1  -> 3D
	 * E -> 1 | 0 | 0 | 1 | 1 | 1 | 1  -> 4F
	 * F -> 1 | 0 | 0 | 0 | 1 | 1 | 1  -> 47
	 */
	/**
	 * La table de resolution du d閏odage BCD -> 7 segments
	 */
	public final static int[] RESOLVE_7SEG = {
			0x7E, 0x30, 0x6D, 0x79, 0x33, 0x5B, 0x5F, 0x70, 0x7F, 0x7B, 0x77, 0x1F, 0x4E, 0x3D, 0x4F, 0x47
	};
	private JComboBox[] comboBoxes = new JComboBox[4];
	private DisplayPnl disp;
	
	/**
	 * Cr閑 une fenetre afficheur 7 segments.
	 */
	public GUI_7SegDisplay() {
		super();
		setTitle("7 Seg");
		getContentPane().add(disp = new DisplayPnl());
		JPanel panel = new JPanel(new GridLayout(4, 2));		
		createComboBoxes(panel);
		getContentPane().add(panel, BorderLayout.SOUTH);
		setSize(120, 220);	
		setLocation(530+250, 385+40+110+10);
		setVisible(true);
		setResizable(false);
		drawSeg();
	}
	
	/**
	 * Cr閑 les 4 combobox pour la selection des bits du bus
	 * @param panel Le panel sur lequel on ajoute les combobox.
	 */
	private void createComboBoxes(JPanel panel) {
		JLabel label;
		String[] str = new String[4*8];
		for(int j = 0; j < 4; j++)
			for(int k = 0; k < 8; k++)
				str[8*j+k] = "P" + j + "." + k;
		for(int i = 0; i < 4; i++) {
			label = new JLabel("Bit " + i + " :");
			panel.add(label);			
			comboBoxes[i] = new JComboBox(str);
			comboBoxes[i].setSelectedIndex(i);
			panel.add(comboBoxes[i]);
		}
	}
	
	/**
	 * D閏odage BCD -> 7 segments
	 * @param boxes Les combobox.
	 * @return La valeur ou chaque bit repr閟ente un segment
	 */
	private int resolveStateFromBoxes(JComboBox[] boxes) {
		int[] tbl = { CORE_CPU8051.P0, CORE_CPU8051.P1, CORE_CPU8051.P2, CORE_CPU8051.P3 };
		int port, bit, tmp = 0;
		for(int i = 0; i < 4; i++) {
			port = Integer.parseInt(((String)boxes[i].getSelectedItem()).substring(1, 2));
			bit  = Integer.parseInt(((String)boxes[i].getSelectedItem()).substring(3, 4));
			tmp |= (((CORE_CPU8051.internalDataMem[tbl[port]]&(1<<bit)) != 0 ? 1 : 0)<<i)&0xFF;
		}
		return  RESOLVE_7SEG[tmp];
	}
	
	private class DisplayPnl extends JPanel {
		private final static int WI = 30;
		private final static int HE = 10;	
		private void drawRect(Graphics g, int st, int x, int y, int or) {
			int w, h;
			if(or == 0) {// horiz
				w = WI; h = HE;
			}
			else {
				w = HE; h = WI;
			}
			if(st != 0)
				g.setColor(Color.RED);
			else
				g.setColor(Color.WHITE);
			g.fillRect(x, y, w, h);				
		}
		
		public void paint(Graphics g) {
			super.paint(g);
			g.setColor(Color.RED);
			int x = (120-(WI+3*HE))/2, y = 10;			
			drawRect(g, state&0x40, x + HE     , y              , 0);
			drawRect(g, state&0x20, x + HE + WI, y + HE         , 1);
			drawRect(g, state&0x10, x + HE + WI, y + HE   +   WI, 1);
			drawRect(g, state&0x08, x + HE     , y + HE   + 2*WI, 0);
			drawRect(g, state&0x04, x          , y + HE   +   WI, 1);
			drawRect(g, state&0x02, x          , y + HE         , 1);
			drawRect(g, state&0x01, x + HE     , y + HE/2 +   WI, 0);			
		}
	}
	
	private int oldstate = 0;
	private int state;
	
	/**
	 * Met