1 package net.mograsim.machine.standard.memory;
3 import static org.junit.jupiter.api.Assertions.assertEquals;
5 import java.math.BigInteger;
6 import java.util.Random;
7 import java.util.stream.LongStream;
9 import org.junit.jupiter.params.ParameterizedTest;
10 import org.junit.jupiter.params.provider.MethodSource;
12 import net.mograsim.logic.core.timeline.Timeline;
13 import net.mograsim.logic.core.types.Bit;
14 import net.mograsim.logic.core.types.BitVector;
15 import net.mograsim.logic.core.wires.CoreWire;
16 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
17 import net.mograsim.machine.MainMemoryDefinition;
19 class WordAddressableMemoryTest
22 private Timeline t = new Timeline(10);
24 @ParameterizedTest(name = "seed = {0}")
25 @MethodSource("seedsForRandom")
26 public void wordAddressableMemoryLargeTest(long seed)
28 CoreWire rW = new CoreWire(t, 1, 2);
29 CoreWire data = new CoreWire(t, 16, 2);
30 CoreWire address = new CoreWire(t, 64, 2);
31 ReadWriteEnd rWI = rW.createReadWriteEnd();
32 ReadWriteEnd dataI = data.createReadWriteEnd();
33 ReadWriteEnd addressI = address.createReadWriteEnd();
35 @SuppressWarnings("unused")
36 CoreWordAddressableMemory memory = new CoreWordAddressableMemory(t, 4,
37 new WordAddressableMemory(MainMemoryDefinition.create(64, 16, 4096L, Long.MAX_VALUE)), data.createReadWriteEnd(),
38 rW.createReadOnlyEnd(), address.createReadOnlyEnd());
40 Random r = new Random(seed);
41 for (long j = 1; j > 0; j *= 2)
43 for (int i = 0; i < 100; i++)
45 BitVector bAddress = BitVector.from(4096 + i + j, 64);
46 addressI.feedSignals(bAddress);
48 String random = BigInteger.valueOf(Math.abs(r.nextInt())).toString(5);
49 random = random.substring(Integer.max(0, random.length() - 16));
50 random = String.format("%16s", random).replace(' ', '0');
51 random = random.replace('2', 'X').replace('3', 'Z').replace('4', 'U');
52 BitVector vector = BitVector.parse(random);
53 dataI.feedSignals(vector);
54 rWI.feedSignals(Bit.ZERO);
56 rWI.feedSignals(Bit.ONE);
61 assertEquals(vector, dataI.getValues(), "seed=" + seed + ", j=" + j + ", i=" + i);
66 public static LongStream seedsForRandom()
68 return LongStream.range(0, 20);