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