net.mograsim.logic.model.am2900/src/net/mograsim/logic/model/am2900/components/am2904/ModelAm2904ShiftInstrDecode.java

   1 package net.mograsim.logic.model.am2900.components.am2904;
   2
   3 import static net.mograsim.logic.core.types.Bit.ONE;
   4 import static net.mograsim.logic.core.types.Bit.U;
   5 import static net.mograsim.logic.core.types.Bit.X;
   6 import static net.mograsim.logic.core.types.Bit.Z;
   7 import static net.mograsim.logic.core.types.Bit.ZERO;
   8
   9 import java.util.Map;
  10
  11 import net.mograsim.logic.core.types.Bit;
  12 import net.mograsim.logic.core.types.BitVector;
  13 import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
  14 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
  15 import net.mograsim.logic.model.model.LogicModelModifiable;
  16 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedModelComponent;
  17 import net.mograsim.logic.model.model.wires.Pin;
  18 import net.mograsim.logic.model.model.wires.PinUsage;
  19 import net.mograsim.logic.model.serializing.IndirectModelComponentCreator;
  20 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
  21
  22 public class ModelAm2904ShiftInstrDecode extends SimpleRectangularHardcodedModelComponent
  23 {
  24         public ModelAm2904ShiftInstrDecode(LogicModelModifiable model, String name)
  25         {
  26                 super(model, "Am2904ShiftInstrDecode", name, "Shift \ninstruction\ndecode", false);
  27                 setSize(60, 80);
  28                 addPin(new Pin(model, this, "I", 5, PinUsage.INPUT, 0, 25), Position.RIGHT);
  29                 addPin(new Pin(model, this, "_SE", 1, PinUsage.INPUT, 0, 55), Position.RIGHT);
  30                 // SIO0 MUX:
  31                 // 000: 0
  32                 // 001: 1
  33                 // 01x: SIOn
  34                 // 10x: QIOn
  35                 // 11x: MC
  36                 addPin(new Pin(model, this, "SIO0_MUX", 3, PinUsage.OUTPUT, 60, 5), Position.LEFT);
  37                 // SIOn MUX:
  38                 // 000: 0
  39                 // 001: 1
  40                 // 010: SIO0
  41                 // 011: QIO0
  42                 // 100: MC
  43                 // 101: MN
  44                 // 110: IC
  45                 // 111: IN xor IVOR
  46                 addPin(new Pin(model, this, "SIOn_MUX", 3, PinUsage.OUTPUT, 60, 15), Position.LEFT);
  47                 // QIO0 MUX:
  48                 // 000: 0
  49                 // 001: 1
  50                 // 01x: SIOn
  51                 // 10x: QIOn
  52                 // 11x: MC
  53                 addPin(new Pin(model, this, "QIO0_MUX", 3, PinUsage.OUTPUT, 60, 25), Position.LEFT);
  54                 // QIOn MUX:
  55                 // 000: 0
  56                 // 001: 1
  57                 // 01x: SIO0
  58                 // 10x: QIO0
  59                 // 11x: MN
  60                 addPin(new Pin(model, this, "QIOn_MUX", 3, PinUsage.OUTPUT, 60, 35), Position.LEFT);
  61                 addPin(new Pin(model, this, "OEn", 1, PinUsage.OUTPUT, 60, 45), Position.LEFT);
  62                 addPin(new Pin(model, this, "OE0", 1, PinUsage.OUTPUT, 60, 55), Position.LEFT);
  63                 // 00: SIO0
  64                 // 01: QIO0
  65                 // 1x: SIOn
  66                 addPin(new Pin(model, this, "MC_MUX", 2, PinUsage.OUTPUT, 60, 65), Position.LEFT);
  67                 addPin(new Pin(model, this, "MC_EN", 1, PinUsage.OUTPUT, 60, 75), Position.LEFT);
  68
  69                 init();
  70         }
  71
  72         @Override
  73         public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
  74         {
  75                 Bit _SE = readEnds.get("_SE").getValue();
  76                 BitVector I = readEnds.get("I").getValues();
  77                 readWriteEnds.get("OEn").feedSignals(I.getMSBit(0).not().and(_SE.not()));
  78                 readWriteEnds.get("OE0").feedSignals(I.getMSBit(0).and(_SE.not()));
  79                 if (_SE == Z || _SE == X)
  80                 {
  81                         readWriteEnds.get("SIO0_MUX").feedSignals(X, X, X);
  82                         readWriteEnds.get("SIOn_MUX").feedSignals(X, X, X);
  83                         readWriteEnds.get("QIO0_MUX").feedSignals(X, X, X);
  84                         readWriteEnds.get("QIOn_MUX").feedSignals(X, X, X);
  85                         readWriteEnds.get("MC_MUX").feedSignals(X, X);
  86                         readWriteEnds.get("MC_EN").feedSignals(X);
  87                         return null;
  88                 } else if (_SE == U)
  89                 {
  90
  91                         readWriteEnds.get("SIO0_MUX").feedSignals(U, U, U);
  92                         readWriteEnds.get("SIOn_MUX").feedSignals(U, U, U);
  93                         readWriteEnds.get("QIO0_MUX").feedSignals(U, U, U);
  94                         readWriteEnds.get("QIOn_MUX").feedSignals(U, U, U);
  95                         readWriteEnds.get("MC_MUX").feedSignals(U, U);
  96                         readWriteEnds.get("MC_EN").feedSignals(U);
  97                         return null;
  98                 } else if (_SE == ONE)
  99                 {
 100                         readWriteEnds.get("SIO0_MUX").feedSignals(X, X, X);
 101                         readWriteEnds.get("SIOn_MUX").feedSignals(X, X, X);
 102                         readWriteEnds.get("QIO0_MUX").feedSignals(X, X, X);
 103                         readWriteEnds.get("QIOn_MUX").feedSignals(X, X, X);
 104                         readWriteEnds.get("MC_MUX").feedSignals(X, X);
 105                         readWriteEnds.get("MC_EN").feedSignals(ZERO);
 106                         return null;
 107                 }
 108                 if (!I.isBinary())
 109                 {
 110                         Bit val = null;
 111                         for (Bit b : I.getBits())
 112                                 if (!b.isBinary())
 113                                 {
 114                                         val = b;
 115                                         break;
 116                                 }
 117                         readWriteEnds.get("SIO0_MUX").feedSignals(val, val, val);
 118                         readWriteEnds.get("SIOn_MUX").feedSignals(val, val, val);
 119                         readWriteEnds.get("QIO0_MUX").feedSignals(val, val, val);
 120                         readWriteEnds.get("QIOn_MUX").feedSignals(val, val, val);
 121                         readWriteEnds.get("MC_MUX").feedSignals(val, val);
 122                         readWriteEnds.get("MC_EN").feedSignals(val);
 123                         return null;
 124                 }
 125                 int IAsInt = I.getUnsignedValue().intValue();
 126                 if (IAsInt < 16)
 127                 {
 128                         readWriteEnds.get("SIO0_MUX").feedSignals(X, X, X);
 129                         readWriteEnds.get("QIO0_MUX").feedSignals(X, X, X);
 130                         switch (IAsInt)
 131                         {
 132                         case 0:
 133                         case 2:
 134                         case 6:
 135                         case 7:
 136                                 readWriteEnds.get("SIOn_MUX").feedSignals(ZERO, ZERO, ZERO);
 137                                 break;
 138                         case 1:
 139                         case 3:
 140                                 readWriteEnds.get("SIOn_MUX").feedSignals(ZERO, ZERO, ONE);
 141                                 break;
 142                         case 4:
 143                         case 9:
 144                         case 12:
 145                                 readWriteEnds.get("SIOn_MUX").feedSignals(ONE, ZERO, ZERO);
 146                                 break;
 147                         case 5:
 148                                 readWriteEnds.get("SIOn_MUX").feedSignals(ONE, ZERO, ONE);
 149                                 break;
 150                         case 8:
 151                         case 10:
 152                                 readWriteEnds.get("SIOn_MUX").feedSignals(ZERO, ONE, ZERO);
 153                                 break;
 154                         case 11:
 155                                 readWriteEnds.get("SIOn_MUX").feedSignals(ONE, ONE, ZERO);
 156                                 break;
 157                         case 13:
 158                         case 15:
 159                                 readWriteEnds.get("SIOn_MUX").feedSignals(ZERO, ONE, ONE);
 160                                 break;
 161                         case 14:
 162                                 readWriteEnds.get("SIOn_MUX").feedSignals(ONE, ONE, ONE);
 163                                 break;
 164                         default:
 165                                 throw new IllegalStateException("can't happen");
 166                         }
 167                         switch (IAsInt)
 168                         {
 169                         case 0:
 170                                 readWriteEnds.get("QIOn_MUX").feedSignals(ZERO, ZERO, ZERO);
 171                                 break;
 172                         case 1:
 173                                 readWriteEnds.get("QIOn_MUX").feedSignals(ZERO, ZERO, ONE);
 174                                 break;
 175                         case 2:
 176                                 readWriteEnds.get("QIOn_MUX").feedSignals(ONE, ONE, X);
 177                                 break;
 178                         case 3:
 179                         case 4:
 180                         case 5:
 181                         case 6:
 182                         case 7:
 183                         case 11:
 184                         case 12:
 185                         case 13:
 186                         case 14:
 187                         case 15:
 188                                 readWriteEnds.get("QIOn_MUX").feedSignals(ZERO, ONE, X);
 189                                 break;
 190                         case 8:
 191                         case 9:
 192                         case 10:
 193                                 readWriteEnds.get("QIOn_MUX").feedSignals(ONE, ZERO, X);
 194                                 break;
 195                         default:
 196                                 throw new IllegalStateException("can't happen");
 197                         }
 198                 } else
 199                 {
 200                         readWriteEnds.get("SIOn_MUX").feedSignals(X, X, X);
 201                         readWriteEnds.get("QIOn_MUX").feedSignals(X, X, X);
 202                         switch (IAsInt)
 203                         {
 204                         case 16:
 205                         case 18:
 206                                 readWriteEnds.get("SIO0_MUX").feedSignals(ZERO, ZERO, ZERO);
 207                                 break;
 208                         case 17:
 209                         case 19:
 210                                 readWriteEnds.get("SIO0_MUX").feedSignals(ZERO, ZERO, ONE);
 211                                 break;
 212                         case 20:
 213                         case 21:
 214                         case 22:
 215                         case 23:
 216                         case 28:
 217                         case 29:
 218                         case 30:
 219                         case 31:
 220                                 readWriteEnds.get("SIO0_MUX").feedSignals(ONE, ZERO, X);
 221                                 break;
 222                         case 24:
 223                         case 26:
 224                                 readWriteEnds.get("SIO0_MUX").feedSignals(ONE, ONE, X);
 225                                 break;
 226                         case 25:
 227                         case 27:
 228                                 readWriteEnds.get("SIO0_MUX").feedSignals(ZERO, ONE, X);
 229                                 break;
 230                         default:
 231                                 throw new IllegalStateException("can't happen");
 232                         }
 233                         switch (IAsInt)
 234                         {
 235                         case 16:
 236                         case 18:
 237                         case 20:
 238                         case 22:
 239                         case 27:
 240                                 readWriteEnds.get("QIO0_MUX").feedSignals(ZERO, ZERO, ZERO);
 241                                 break;
 242                         case 17:
 243                         case 19:
 244                         case 21:
 245                         case 23:
 246                                 readWriteEnds.get("QIO0_MUX").feedSignals(ZERO, ZERO, ONE);
 247                                 break;
 248                         case 24:
 249                         case 25:
 250                         case 26:
 251                                 readWriteEnds.get("SIO0_MUX").feedSignals(ONE, ZERO, X);
 252                                 break;
 253                         case 28:
 254                         case 30:
 255                                 readWriteEnds.get("SIO0_MUX").feedSignals(ONE, ONE, X);
 256                                 break;
 257                         case 29:
 258                         case 31:
 259                                 readWriteEnds.get("QIO0_MUX").feedSignals(ZERO, ONE, X);
 260                                 break;
 261                         default:
 262                                 throw new IllegalStateException("can't happen");
 263                         }
 264                 }
 265                 // MC
 266                 switch (IAsInt)
 267                 {
 268                 case 0:
 269                 case 1:
 270                 case 3:
 271                 case 4:
 272                 case 5:
 273                 case 6:
 274                 case 10:
 275                 case 11:
 276                 case 14:
 277                 case 15:
 278                 case 18:
 279                 case 19:
 280                 case 22:
 281                 case 23:
 282                 case 26:
 283                 case 27:
 284                 case 30:
 285                 case 31:
 286                         readWriteEnds.get("MC_EN").feedSignals(ZERO);
 287                         readWriteEnds.get("MC_MUX").feedSignals(X, X);
 288                         break;
 289                 case 2:
 290                 case 8:
 291                 case 9:
 292                         readWriteEnds.get("MC_EN").feedSignals(ONE);
 293                         readWriteEnds.get("MC_MUX").feedSignals(ZERO, ZERO);
 294                         break;
 295                 case 7:
 296                 case 12:
 297                 case 13:
 298                         readWriteEnds.get("MC_EN").feedSignals(ONE);
 299                         readWriteEnds.get("MC_MUX").feedSignals(ZERO, ONE);
 300                         break;
 301                 case 16:
 302                 case 17:
 303                 case 20:
 304                 case 21:
 305                 case 24:
 306                 case 25:
 307                 case 28:
 308                 case 29:
 309                         readWriteEnds.get("MC_EN").feedSignals(ONE);
 310                         readWriteEnds.get("MC_MUX").feedSignals(ONE, X);
 311                         break;
 312                 default:
 313                         throw new IllegalStateException("can't happen");
 314                 }
 315                 return null;
 316         }
 317
 318         static
 319         {
 320                 IndirectModelComponentCreator.setComponentSupplier(ModelAm2904ShiftInstrDecode.class.getCanonicalName(),
 321                                 (m, p, n) -> new ModelAm2904ShiftInstrDecode(m, n));
 322         }
 323 }