1 package net.mograsim.machine.standard.memory;
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3 import static org.junit.jupiter.api.Assertions.assertEquals;
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5 import java.math.BigInteger;
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6 import java.util.Random;
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8 import org.junit.jupiter.api.Test;
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10 import net.mograsim.logic.core.timeline.Timeline;
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11 import net.mograsim.logic.core.types.Bit;
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12 import net.mograsim.logic.core.types.BitVector;
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13 import net.mograsim.logic.core.wires.Wire;
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14 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
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16 class WordAddressableMemoryTest {
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18 private Timeline t = new Timeline(10);
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21 public void wordAddressableMemoryLargeTest()
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23 Wire rW = new Wire(t, 1, 2);
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24 Wire data = new Wire(t, 16, 2);
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25 Wire address = new Wire(t, 64, 2);
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26 ReadWriteEnd rWI = rW.createReadWriteEnd();
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27 ReadWriteEnd dataI = data.createReadWriteEnd();
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28 ReadWriteEnd addressI = address.createReadWriteEnd();
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30 WordAddressableMemoryComponent memory = new WordAddressableMemoryComponent(t, 4, 4096L, Long.MAX_VALUE, data.createReadWriteEnd(),
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31 rW.createReadOnlyEnd(), address.createReadOnlyEnd());
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33 Random r = new Random();
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34 for (long j = 1; j > 0; j *= 2)
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36 for (int i = 0; i < 50; i++)
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38 String sAddress = String.format("%64s", BigInteger.valueOf(4096 + i + j).toString(2)).replace(' ', '0');
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39 sAddress = new StringBuilder(sAddress).reverse().toString();
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40 BitVector bAddress = BitVector.parse(sAddress);
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41 addressI.feedSignals(bAddress);
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43 String random = BigInteger.valueOf(Math.abs(r.nextInt())).toString(5);
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44 random = random.substring(Integer.max(0, random.length() - 16));
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45 random = String.format("%16s", random).replace(' ', '0');
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46 random = random.replace('2', 'X').replace('3', 'Z').replace('4', 'U');
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47 BitVector vector = BitVector.parse(random);
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48 dataI.feedSignals(vector);
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49 rWI.feedSignals(Bit.ZERO);
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51 rWI.feedSignals(Bit.ONE);
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53 dataI.clearSignals();
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56 assertEquals(dataI.getValues(), vector);
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