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         private Timeline t = new Timeline(10);
  20
  21         @Test
  22         public void wordAddressableMemoryLargeTest()
  23         {
  24                 CoreWire rW = new CoreWire(t, 1, 2);
  25                 CoreWire data = new CoreWire(t, 16, 2);
  26                 CoreWire address = new CoreWire(t, 64, 2);
  27                 CoreWire clock = new CoreWire(t, 1, 2);
  28                 ReadWriteEnd rWI = rW.createReadWriteEnd();
  29                 ReadWriteEnd dataI = data.createReadWriteEnd();
  30                 ReadWriteEnd addressI = address.createReadWriteEnd();
  31                 ReadWriteEnd clockI = clock.createReadWriteEnd();
  32
  33                 @SuppressWarnings("unused")
  34                 CoreWordAddressableMemory memory = new CoreWordAddressableMemory(t, 4, MainMemoryDefinition.create(64, 16, 4096L, Long.MAX_VALUE), data.createReadWriteEnd(),
  35                                 rW.createReadOnlyEnd(), address.createReadOnlyEnd(), clock.createReadOnlyEnd());
  36
  37                 clockI.feedSignals(Bit.ONE);
  38
  39                 Random r = new Random();
  40                 for (long j = 1; j > 0; j *= 2)
  41                 {
  42                         for (int i = 0; i < 50; i++)
  43                         {
  44                                 String sAddress = String.format("%64s", BigInteger.valueOf(4096 + i + j).toString(2)).replace(' ', '0');
  45                                 sAddress = new StringBuilder(sAddress).reverse().toString();
  46                                 BitVector bAddress = BitVector.parse(sAddress);
  47                                 addressI.feedSignals(bAddress);
  48                                 t.executeAll();
  49                                 String random = BigInteger.valueOf(Math.abs(r.nextInt())).toString(5);
  50                                 random = random.substring(Integer.max(0, random.length() - 16));
  51                                 random = String.format("%16s", random).replace(' ', '0');
  52                                 random = random.replace('2', 'X').replace('3', 'Z').replace('4', 'U');
  53                                 BitVector vector = BitVector.parse(random);
  54                                 dataI.feedSignals(vector);
  55                                 rWI.feedSignals(Bit.ZERO);
  56                                 t.executeAll();
  57                                 rWI.feedSignals(Bit.ONE);
  58                                 t.executeAll();
  59                                 dataI.clearSignals();
  60                                 t.executeAll();
  61
  62                                 assertEquals(dataI.getValues(), vector);
  63                         }
  64                 }
  65         }
  66
  67 }