net.mograsim.machine/test/net/mograsim/machine/standard/memory/WordAddressableMemoryTest.java

   1 package net.mograsim.machine.standard.memory;
   2
   3 import static org.junit.jupiter.api.Assertions.assertEquals;
   4
   5 import java.math.BigInteger;
   6 import java.util.Random;
   7
   8 import org.junit.jupiter.api.Test;
   9
  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.CoreWire;
  14 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
  15 import net.mograsim.machine.MainMemoryDefinition;
  16
  17 class WordAddressableMemoryTest
  18 {
  19
  20         private Timeline t = new Timeline(10);
  21
  22         @Test
  23         public void wordAddressableMemoryLargeTest()
  24         {
  25                 CoreWire rW = new CoreWire(t, 1, 2);
  26                 CoreWire data = new CoreWire(t, 16, 2);
  27                 CoreWire address = new CoreWire(t, 64, 2);
  28                 ReadWriteEnd rWI = rW.createReadWriteEnd();
  29                 ReadWriteEnd dataI = data.createReadWriteEnd();
  30                 ReadWriteEnd addressI = address.createReadWriteEnd();
  31
  32                 @SuppressWarnings("unused")
  33                 CoreWordAddressableMemory memory = new CoreWordAddressableMemory(t, 4,
  34                                 new WordAddressableMemory(MainMemoryDefinition.create(64, 16, 4096L, Long.MAX_VALUE)), data.createReadWriteEnd(),
  35                                 rW.createReadOnlyEnd(), address.createReadOnlyEnd());
  36
  37                 Random r = new Random();
  38                 for (long j = 1; j > 0; j *= 2)
  39                 {
  40                         for (int i = 0; i < 50; i++)
  41                         {
  42                                 String sAddress = String.format("%64s", BigInteger.valueOf(4096 + i + j).toString(2)).replace(' ', '0');
  43                                 BitVector bAddress = BitVector.parse(sAddress);
  44                                 addressI.feedSignals(bAddress);
  45                                 t.executeAll();
  46                                 String random = BigInteger.valueOf(Math.abs(r.nextInt())).toString(5);
  47                                 random = random.substring(Integer.max(0, random.length() - 16));
  48                                 random = String.format("%16s", random).replace(' ', '0');
  49                                 random = random.replace('2', 'X').replace('3', 'Z').replace('4', 'U');
  50                                 BitVector vector = BitVector.parse(random);
  51                                 dataI.feedSignals(vector);
  52                                 rWI.feedSignals(Bit.ZERO);
  53                                 t.executeAll();
  54                                 rWI.feedSignals(Bit.ONE);
  55                                 t.executeAll();
  56                                 dataI.clearSignals();
  57                                 t.executeAll();
  58
  59                                 assertEquals(dataI.getValues(), vector);
  60                         }
  61                 }
  62         }
  63
  64 }