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;
8 import org.junit.jupiter.api.Test;
10 import net.mograsim.logic.core.timeline.Timeline;
11 import net.mograsim.logic.core.types.Bit;
12 import net.mograsim.logic.core.types.BitVector;
13 import net.mograsim.logic.core.wires.Wire;
14 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
15 import net.mograsim.machine.DefaultMainMemoryDefinition;
17 class WordAddressableMemoryTest {
19 private Timeline t = new Timeline(10);
22 public void wordAddressableMemoryLargeTest()
24 Wire rW = new Wire(t, 1, 2);
25 Wire data = new Wire(t, 16, 2);
26 Wire address = new Wire(t, 64, 2);
27 ReadWriteEnd rWI = rW.createReadWriteEnd();
28 ReadWriteEnd dataI = data.createReadWriteEnd();
29 ReadWriteEnd addressI = address.createReadWriteEnd();
31 WordAddressableMemoryComponent memory = new WordAddressableMemoryComponent(t, 4, new DefaultMainMemoryDefinition(64, 16, 4096L, Long.MAX_VALUE), data.createReadWriteEnd(),
32 rW.createReadOnlyEnd(), address.createReadOnlyEnd());
34 Random r = new Random();
35 for (long j = 1; j > 0; j *= 2)
37 for (int i = 0; i < 50; i++)
39 String sAddress = String.format("%64s", BigInteger.valueOf(4096 + i + j).toString(2)).replace(' ', '0');
40 sAddress = new StringBuilder(sAddress).reverse().toString();
41 BitVector bAddress = BitVector.parse(sAddress);
42 addressI.feedSignals(bAddress);
44 String random = BigInteger.valueOf(Math.abs(r.nextInt())).toString(5);
45 random = random.substring(Integer.max(0, random.length() - 16));
46 random = String.format("%16s", random).replace(' ', '0');
47 random = random.replace('2', 'X').replace('3', 'Z').replace('4', 'U');
48 BitVector vector = BitVector.parse(random);
49 dataI.feedSignals(vector);
50 rWI.feedSignals(Bit.ZERO);
52 rWI.feedSignals(Bit.ONE);
57 assertEquals(dataI.getValues(), vector);