Implement UI for the VIA/PIA

src/main/java/com/loomcom/symon/ui/StatusPanel.java

@@ -26,12 +26,13 @@ package com.loomcom.symon.ui;
 import com.formdev.flatlaf.util.UIScale;
 import com.loomcom.symon.Cpu;
 import com.loomcom.symon.CpuState;
+import com.loomcom.symon.devices.Pia;
+import com.loomcom.symon.devices.Via6522;
 import com.loomcom.symon.machines.Machine;
 
 import javax.swing.*;
 import javax.swing.border.Border;
 import javax.swing.border.EtchedBorder;
-import javax.swing.plaf.metal.MetalTextFieldUI;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
@@ -71,6 +72,8 @@ public class StatusPanel extends JPanel {
     private JTextField aField;
     private JTextField xField;
     private JTextField yField;
+    private JTextField piaBField;
+    private JTextField piaAField;
 
     private final Machine machine;
 
@@ -153,6 +156,10 @@ public class StatusPanel extends JPanel {
         JLabel xLabel = makeLabel("X");
         JLabel yLabel = makeLabel("Y");
 
+        // PIA/VIA labels
+        JLabel piaBLabel = makeLabel("PB");
+        JLabel piaALabel = makeLabel("PA");
+
         statusFlagsLabel.setToolTipText("6502 Processor Status Flags");
         opcodeLabel.setToolTipText("Instruction Register");
         pcLabel.setToolTipText("Program Counter");
@@ -165,6 +172,9 @@ public class StatusPanel extends JPanel {
         xField = makeTextField(SMALL_TEXT_FIELD_SIZE, true);
         yField = makeTextField(SMALL_TEXT_FIELD_SIZE, true);
 
+        piaBField = makeTextField(LARGE_TEXT_FIELD_SIZE, false);
+        piaAField = makeTextField(LARGE_TEXT_FIELD_SIZE, false);
+
         // Make fields editable
         pcField.addActionListener(new ActionListener() {
             @Override
@@ -287,6 +297,25 @@ public class StatusPanel extends JPanel {
         add(xField, constraints);
         constraints.gridx = 1;
         add(yField, constraints);
+
+        constraints.insets = new Insets(5, 0, 0, 0);
+        constraints.gridx = 0;
+        constraints.gridwidth = 2;
+        constraints.gridy = 10;
+        add(piaBLabel, constraints);
+
+        constraints.insets = new Insets(2, 2, 2, 2);
+        constraints.gridy = 11;
+        add(piaBField, constraints);
+
+        constraints.insets = new Insets(5, 0, 0, 0);
+        constraints.gridy = 12;
+        add(piaALabel, constraints);
+
+        constraints.insets = new Insets(2, 2, 2, 2);
+        constraints.gridy = 13;
+        add(piaAField, constraints);
+
     }
 
     /**
@@ -296,6 +325,8 @@ public class StatusPanel extends JPanel {
         Cpu cpu = machine.getCpu();
         CpuState cpuState = cpu.getCpuState();
 
+        Pia pia = machine.getPia();
+
         // Update the Processor Status Flag display
         int status = cpuState.getStatusFlag();
 
@@ -317,6 +348,12 @@ public class StatusPanel extends JPanel {
         xField.setText(cpu.getXRegisterStatus());
         yField.setText(cpu.getYRegisterStatus());
 
+        // Update the Pia Variables
+        if (pia instanceof Via6522) {
+            piaBField.setText(((Via6522) pia).getPBStatus());
+            piaAField.setText(((Via6522) pia).getPAStatus());
+        }
+
         repaint();
     }