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diff --git a/tests/net.mograsim.logic.model.am2900.tests/src/net/mograsim/logic/model/am2900/am2901/TestableAm2901Impl.java b/tests/net.mograsim.logic.model.am2900.tests/src/net/mograsim/logic/model/am2900/am2901/TestableAm2901Impl.java
new file mode 100644
index 00000000..bddddea5
--- /dev/null
+++ b/tests/net.mograsim.logic.model.am2900.tests/src/net/mograsim/logic/model/am2900/am2901/TestableAm2901Impl.java
@@ -0,0 +1,211 @@
+package net.mograsim.logic.model.am2900.am2901;
+
+import net.mograsim.logic.core.components.CoreBitDisplay;
+import net.mograsim.logic.core.components.CoreManualSwitch;
+import net.mograsim.logic.core.types.Bit;
+import net.mograsim.logic.core.types.BitVector;
+import net.mograsim.logic.model.am2900.util.SwitchWithDisplay;
+import net.mograsim.logic.model.am2900.util.TestEnvironmentHelper;
+import net.mograsim.logic.model.am2900.util.TestEnvironmentHelper.DebugState;
+import net.mograsim.logic.model.am2900.util.TestUtil;
+import net.mograsim.logic.model.model.components.ModelComponent;
+
+public class TestableAm2901Impl implements TestableAm2901
+{
+	private ModelComponent am2901;
+	private CoreManualSwitch I;
+	private CoreManualSwitch C;
+	private CoreManualSwitch Cn;
+	private CoreManualSwitch D;
+	private CoreManualSwitch A;
+	private CoreManualSwitch B;
+	private CoreBitDisplay Y;
+	private CoreBitDisplay F_0, Cn_4, OVR, F3;
+	private SwitchWithDisplay RAMn, RAMn_3, Qn, Qn_3;
+
+	private final TestEnvironmentHelper testHelper = new TestEnvironmentHelper(this, "Am2901");
+
+	@Override
+	public Result run()
+	{
+		return testHelper.run();
+	}
+
+	@Override
+	public void setup()
+	{
+		testHelper.setup(DebugState.NO_DEBUG);
+	}
+
+	@Override
+	public void setDest(Am2901_Dest dest)
+	{
+		BitVector oldI = I.getValues();
+		I.setState(TestUtil.of(dest.ordinal(), 3).concat(oldI.subVector(3)));
+	}
+
+	@Override
+	public void setFunc(Am2901_Func func)
+	{
+		BitVector oldI = I.getValues();
+		I.setState(oldI.subVector(0, 3).concat(TestUtil.of(func.ordinal(), 3)).concat(oldI.subVector(6)));
+	}
+
+	@Override
+	public void setSrc(Am2901_Src src)
+	{
+		BitVector oldI = I.getValues();
+		I.setState(oldI.subVector(0, 6).concat(TestUtil.of(src.ordinal(), 3)));
+	}
+
+	@Override
+	public void setReg_A(String val_4_bit)
+	{
+		A.setState(BitVector.parse(val_4_bit));
+	}
+
+	@Override
+	public void setReg_B(String val_4_bit)
+	{
+		B.setState(BitVector.parse(val_4_bit));
+	}
+
+	@Override
+	public void setCarryIn(String val_1_bit)
+	{
+		Cn.setState(Bit.parse(val_1_bit));
+	}
+
+	@Override
+	public void setNotOutEnable(String val_1_bit)
+	{
+		throw new UnsupportedOperationException(); // TODO
+	}
+
+	@Override
+	public void setD(String val_4_bit)
+	{
+		D.setState(BitVector.parse(val_4_bit));
+	}
+
+	@Override
+	public void setQ_0(String val_1_bit)
+	{
+		Qn.setState(Bit.parse(val_1_bit).toVector());
+	}
+
+	@Override
+	public void setQ_3(String val_1_bit)
+	{
+		Qn_3.setState(Bit.parse(val_1_bit).toVector());
+	}
+
+	@Override
+	public void setRAM_0(String val_1_bit)
+	{
+		RAMn.setState(Bit.parse(val_1_bit).toVector());
+	}
+
+	@Override
+	public void setRAM_3(String val_1_bit)
+	{
+		RAMn_3.setState(Bit.parse(val_1_bit).toVector());
+	}
+
+	@Override
+	public void clockOn(boolean isClockOn)
+	{
+		C.setState(isClockOn ? Bit.ONE : Bit.ZERO);
+	}
+
+	@Override
+	public String getQ_0()
+	{
+		return Qn.getDisplayedValue().toString();
+	}
+
+	@Override
+	public String getQ_3()
+	{
+		return Qn_3.getDisplayedValue().toString();
+	}
+
+	@Override
+	public String getRAM_0()
+	{
+		return RAMn.getDisplayedValue().toString();
+	}
+
+	@Override
+	public String getRAM_3()
+	{
+		return RAMn_3.getDisplayedValue().toString();
+	}
+
+	@Override
+	public String getNotP()
+	{
+		throw new UnsupportedOperationException(); // TODO
+	}
+
+	@Override
+	public String getNotG()
+	{
+		throw new UnsupportedOperationException(); // TODO
+	}
+
+	@Override
+	public String getCarryOut()
+	{
+		return Cn_4.getDisplayedValue().toString();
+	}
+
+	@Override
+	public String getSign()
+	{
+		return F3.getDisplayedValue().toString();
+	}
+
+	@Override
+	public String getZero()
+	{
+		return F_0.getDisplayedValue().toString();
+	}
+
+	@Override
+	public String getOverflow()
+	{
+		return OVR.getDisplayedValue().toString();
+	}
+
+	@Override
+	public String getY()
+	{
+		return Y.getDisplayedValue().toString();
+	}
+
+	@Override
+	public void setDirectly(Register r, String val_4_bit)
+	{
+		am2901.setHighLevelState(regToStateID(r), BitVector.parse(val_4_bit));
+	}
+
+	@Override
+	public String getDirectly(Register r)
+	{
+		return ((BitVector) am2901.getHighLevelState(regToStateID(r))).toString();
+	}
+
+	private static String regToStateID(Register r)
+	{
+		if (r == Register.Q)
+			return "qreg.q";
+		return "regs.c" + r.toBitString() + ".q";
+	}
+
+	@Override
+	public TestEnvironmentHelper getTestEnvironmentHelper()
+	{
+		return testHelper;
+	}
+}