implementing the first simple program emulator

src/main/java/de/mcs/tools/sps/EmulatorOutput.java

@@ -13,4 +13,12 @@ public interface EmulatorOutput {
 
   void reset();
 
+  byte getOutput();
+
+  byte getFeature(String name);
+
+  void setFeature(String name, byte register);
+
+  void setOutput(byte data);
+
 }

src/main/java/de/mcs/tools/sps/holtek/HoltekEmulatorOutput.java

@@ -23,6 +23,7 @@ public class HoltekEmulatorOutput implements EmulatorOutput {
     pwm = 0;
   }
 
+  @Override
   public void setOutput(byte data) {
     d0 = (data & (byte) 0x01) > 0;
     d1 = (data & (byte) 0x02) > 0;
@@ -30,16 +31,19 @@ public class HoltekEmulatorOutput implements EmulatorOutput {
     d3 = (data & (byte) 0x08) > 0;
   }
 
+  @Override
   public byte getOutput() {
     return (byte) ((d0 ? 1 : 0) + (d1 ? 2 : 0) + (d2 ? 4 : 0) + (d3 ? 8 : 0));
   }
 
+  @Override
   public void setFeature(String name, byte register) {
     if ("PWM".equals(name.toUpperCase())) {
       pwm = register;
     }
   }
 
+  @Override
   public byte getFeature(String name) {
     if ("PWM".equals(name.toUpperCase())) {
       return (byte) pwm;

src/test/java/de/mcs/tools/sps/holtek/TestHoltekProgram.java

@@ -0,0 +1,53 @@
+package de.mcs.tools.sps.holtek;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import de.mcs.tools.sps.EmulatorInput;
+import de.mcs.tools.sps.EmulatorInternals;
+import de.mcs.tools.sps.EmulatorOutput;
+import de.mcs.tools.sps.TOutputCallback;
+import de.mcs.tools.sps.exceptions.WrongProgramSizeException;
+
+class TestHoltekProgram implements TOutputCallback {
+
+  private HoltekEmulator holtekEmulator;
+
+  @BeforeEach
+  void setUp() throws Exception {
+    holtekEmulator = new HoltekEmulator();
+    holtekEmulator.addCallback(this);
+  }
+
+  @Test
+  void test() throws WrongProgramSizeException {
+    byte[] prg = new byte[] { 0x10, 0x1F, 0x10 };
+    holtekEmulator.loadProgram(prg);
+    holtekEmulator.startProgram(true);
+    holtekEmulator.nextStep();
+    holtekEmulator.nextStep();
+    holtekEmulator.nextStep();
+  }
+
+  @Override
+  public void onOutput(EmulatorOutput output) {
+    EmulatorInternals internals = holtekEmulator.getEmulatorInternals();
+    EmulatorInput input = holtekEmulator.getEmulatorInput();
+    System.out.printf("adr: 0x%04x, a:0x%02x, b:0x%02x, c:0x%02x, d:0x%02x, page:0x%02x\r\n", internals.getAddress(),
+        internals.getRegister(HoltekEmulatorInternals.REGISTER_A),
+        internals.getRegister(HoltekEmulatorInternals.REGISTER_B),
+        internals.getRegister(HoltekEmulatorInternals.REGISTER_C),
+        internals.getRegister(HoltekEmulatorInternals.REGISTER_D),
+        internals.getRegister(HoltekEmulatorInternals.REGISTER_PAGE));
+    String value = getNibbleString(output.getOutput());
+    System.out.printf("in: %4s, s1: %b, s2: %b, adc1: 0x%02x, adc2: 0x%02x\r\n", value, input.getFeatureAsBool("S1"),
+        input.getFeatureAsBool("S2"), input.getFeature("ADC1"), input.getFeature("ADC2"));
+    System.out.printf("out: %4s, pwm: 0x%02x\r\n", value, output.getFeature("PWM"));
+    System.out.println();
+  }
+
+  private String getNibbleString(byte value) {
+    return String.format("%4s", Integer.toBinaryString(value & 0xFF)).replace(' ', '0');
+  }
+
+}