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 MainMemoryDefinition definition = MainMemoryDefinition.create(64, 16, 4096L, Long.MAX_VALUE);
36 CoreWordAddressableMemory memory = new CoreWordAddressableMemory(t, 4, definition, data.createReadWriteEnd(),
37 rW.createReadOnlyEnd(), address.createReadOnlyEnd());
38 memory.setMemory(new WordAddressableMemory(definition));
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 BigInteger random = BigInteger.valueOf(Math.abs(r.nextInt()));
49 BitVector vector = BitVector.from(random, 16);
50 dataI.feedSignals(vector);
51 rWI.feedSignals(Bit.ZERO);
53 rWI.feedSignals(Bit.ONE);
58 assertEquals(vector, dataI.getValues(), "seed=" + seed + ", j=" + j + ", i=" + i);
63 public static LongStream seedsForRandom()
65 return LongStream.range(0, 20);