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diff --git a/net.mograsim.logic.ui.am2900/test/net/mograsim/logic/ui/am2900/Am2901Test.java b/net.mograsim.logic.ui.am2900/test/net/mograsim/logic/ui/am2900/Am2901Test.java
new file mode 100644
index 00000000..18d60c3b
--- /dev/null
+++ b/net.mograsim.logic.ui.am2900/test/net/mograsim/logic/ui/am2900/Am2901Test.java
@@ -0,0 +1,107 @@
+package net.mograsim.logic.ui.am2900;
+
+import static net.mograsim.logic.ui.am2900.TestableAm2901.Am2901_Dest.*;
+import static net.mograsim.logic.ui.am2900.TestableAm2901.Am2901_Func.*;
+import static net.mograsim.logic.ui.am2900.TestableAm2901.Am2901_Src.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import net.mograsim.logic.ui.am2900.TestableAm2901.Result;
+
+public class Am2901Test
+{
+	private TestableAm2901 am2901;
+
+	@BeforeEach
+	void initialize()
+	{
+		createAndSetup();
+		setRegistersToZero();
+	}
+
+	@Test
+	void testInit()
+	{
+		assertEquals("0", am2901.getCarryOut());
+		assertEquals("0", am2901.getOverflow());
+		assertEquals("0", am2901.getSign());
+		assertEquals("1", am2901.getZero());
+		assertEquals("0000", am2901.getY());
+		assertEquals("0", am2901.getQ_0());
+		assertEquals("0", am2901.getQ_3());
+		assertEquals("0", am2901.getRAM_0());
+		assertEquals("0", am2901.getRAM_3());
+	}
+
+	void createAndSetup()
+	{
+		am2901 = new TestableAm2901Impl();
+		am2901.setup();
+	}
+
+	void setRegistersToZero()
+	{
+		setInputsToZero();
+		for (Regsiter r : Regsiter.values())
+		{
+			setRegisterToZero(r);
+		}
+	}
+
+	void setRegisterToZero(Regsiter r)
+	{
+		System.out.println("Setting reg " + r + " to zero");
+		am2901.setD("0000");
+		am2901.setSrc(DZ);
+		am2901.setFunc(AND);
+		if (r == Regsiter.Q)
+		{
+			am2901.setDest(QREG);
+		} else
+		{
+			am2901.setReg_B(r.toBitString());
+			am2901.setDest(RAMF);
+		}
+		assertRunSuccess();
+		am2901.toogleClock();
+		assertRunSuccess();
+		am2901.toogleClock();
+		assertRunSuccess();
+	}
+
+	void setInputsToZero()
+	{
+		am2901.setCarryIn("0");
+		am2901.setQ_0("0");
+		am2901.setQ_3("0");
+		am2901.setRAM_0("0");
+		am2901.setRAM_3("0");
+		am2901.setReg_A("0000");
+		am2901.setReg_B("0000");
+		am2901.setD("0000");
+		am2901.setSrc(AB);
+		am2901.setFunc(ADD);
+		am2901.setDest(QREG);
+//		am2901.setNotOutEnable("0"); TODO
+		assertRunSuccess();
+	}
+
+	void assertRunSuccess()
+	{
+		assertEquals(Result.SUCCESS, am2901.run());
+	}
+
+	public enum Regsiter
+	{
+		r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, rA, rB, rC, rD, rE, rF, Q;
+
+		public String toBitString()
+		{
+			if (this.ordinal() > 0xF)
+				throw new UnsupportedOperationException();
+			return TestUtil.to4bitBin(this.ordinal());
+		}
+	}
+}