plugins/net.mograsim.logic.model.am2900/src/net/mograsim/logic/model/am2900/components/am2904/ModelAm2904RegCTInstrDecode.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.ZERO;
   7
   8 import java.util.Map;
   9
  10 import net.mograsim.logic.core.types.Bit;
  11 import net.mograsim.logic.core.wires.CoreWire.ReadEnd;
  12 import net.mograsim.logic.core.wires.CoreWire.ReadWriteEnd;
  13 import net.mograsim.logic.model.model.LogicModelModifiable;
  14 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedModelComponent;
  15 import net.mograsim.logic.model.model.wires.Pin;
  16 import net.mograsim.logic.model.model.wires.PinUsage;
  17 import net.mograsim.logic.model.serializing.IndirectModelComponentCreator;
  18 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
  19
  20 public class ModelAm2904RegCTInstrDecode extends SimpleRectangularHardcodedModelComponent
  21 {
  22         public ModelAm2904RegCTInstrDecode(LogicModelModifiable model, String name)
  23         {
  24                 super(model, "Am2904RegCTInstrDecode", name, "Instruction\ndecode", false);
  25                 setSize(80, 80);
  26                 addPin(new Pin(model, this, "I12-11", 2, PinUsage.INPUT, 0, 30), Position.RIGHT);
  27                 addPin(new Pin(model, this, "I5-0", 6, PinUsage.INPUT, 0, 50), Position.RIGHT);
  28                 // muSR MUX:
  29                 // 00: 0
  30                 // 01: 1
  31                 // 10: M
  32                 // 11: I
  33                 addPin(new Pin(model, this, "muSR_MUX", 2, PinUsage.OUTPUT, 80, 10), Position.LEFT);
  34                 addPin(new Pin(model, this, "muSR_OVRRET", 1, PinUsage.OUTPUT, 80, 20), Position.LEFT);
  35                 addPin(new Pin(model, this, "muSR_CINV", 1, PinUsage.OUTPUT, 80, 30), Position.LEFT);
  36                 addPin(new Pin(model, this, "muSR_WEZ", 1, PinUsage.OUTPUT, 80, 40), Position.LEFT);
  37                 addPin(new Pin(model, this, "muSR_WEC", 1, PinUsage.OUTPUT, 80, 50), Position.LEFT);
  38                 addPin(new Pin(model, this, "muSR_WEN", 1, PinUsage.OUTPUT, 80, 60), Position.LEFT);
  39                 addPin(new Pin(model, this, "muSR_WEOVR", 1, PinUsage.OUTPUT, 80, 70), Position.LEFT);
  40                 // MSR MUX:
  41                 // 000: 0
  42                 // 001: 1
  43                 // 010: mu
  44                 // 011: Y
  45                 // 100: I
  46                 // 101: I, invert C
  47                 // 110: Swap OVR and C
  48                 // 111: _M
  49                 addPin(new Pin(model, this, "MSR_MUX", 3, PinUsage.OUTPUT, 20, 0), Position.BOTTOM);
  50                 addPin(new Pin(model, this, "OEN", 1, PinUsage.OUTPUT, 60, 0), Position.BOTTOM);
  51                 // Y MUX:
  52                 // 00: mu
  53                 // 01: mu
  54                 // 10: M
  55                 // 11: I
  56                 addPin(new Pin(model, this, "Y_MUX", 2, PinUsage.OUTPUT, 10, 80), Position.TOP);
  57                 // CT MUX:
  58                 // see Am2900 Family Data Book, Am2904, Table 4 (CT_MUX2-0 = I3-1)
  59                 addPin(new Pin(model, this, "CT_MUX", 3, PinUsage.OUTPUT, 30, 80), Position.TOP);
  60                 addPin(new Pin(model, this, "CT_INV", 1, PinUsage.OUTPUT, 40, 80), Position.TOP);
  61                 addPin(new Pin(model, this, "CT_EXP", 1, PinUsage.OUTPUT, 50, 80), Position.TOP);
  62                 // C0 MUX:
  63                 // 00xx: 0
  64                 // 01xx: 1
  65                 // 10xx: CX
  66                 // 1100: muC
  67                 // 1101: _muC
  68                 // 1110: MC
  69                 // 1111: _MC
  70                 addPin(new Pin(model, this, "C0_MUX", 4, PinUsage.OUTPUT, 70, 80), Position.TOP);
  71
  72                 init();
  73         }
  74
  75         @Override
  76         public Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
  77         {
  78                 Bit[] I5_0Bits = readEnds.get("I5-0").getValues().getBits();
  79                 Bit[] I12_11Bits = readEnds.get("I12-11").getValues().getBits();
  80
  81                 readWriteEnds.get("OEN").feedSignals(I5_0Bits[0].or(I5_0Bits[1]).or(I5_0Bits[2]).or(I5_0Bits[3]).or(I5_0Bits[4]).or(I5_0Bits[5]));
  82                 readWriteEnds.get("Y_MUX").feedSignals(I5_0Bits[0], I5_0Bits[1]);
  83                 readWriteEnds.get("CT_INV").feedSignals(I5_0Bits[5]);
  84                 readWriteEnds.get("CT_MUX").feedSignals(I5_0Bits[2], I5_0Bits[3], I5_0Bits[4]);
  85                 readWriteEnds.get("C0_MUX").feedSignals(I12_11Bits[0], I12_11Bits[1], I5_0Bits[0],
  86                                 I5_0Bits[2].and(I5_0Bits[3].not()).and(I5_0Bits[4].not()));
  87
  88                 int IAsInt = 0;
  89                 for (int i = 0; i < 6; i++)
  90                         switch (I5_0Bits[5 - i])
  91                         {
  92                         case ONE:
  93                                 IAsInt |= 1 << i;
  94                                 break;
  95                         case U:
  96                                 readWriteEnds.get("muSR_MUX").feedSignals(U, U);
  97                                 readWriteEnds.get("muSR_OVRRET").feedSignals(U);
  98                                 readWriteEnds.get("muSR_CINV").feedSignals(U);
  99                                 readWriteEnds.get("muSR_WEZ").feedSignals(U);
 100                                 readWriteEnds.get("muSR_WEC").feedSignals(U);
 101                                 readWriteEnds.get("muSR_WEN").feedSignals(U);
 102                                 readWriteEnds.get("muSR_WEOVR").feedSignals(U);
 103                                 readWriteEnds.get("MSR_MUX").feedSignals(U, U, U);
 104                                 return null;
 105                         case X:
 106                         case Z:
 107                                 readWriteEnds.get("muSR_MUX").feedSignals(X, X);
 108                                 readWriteEnds.get("muSR_OVRRET").feedSignals(X);
 109                                 readWriteEnds.get("muSR_CINV").feedSignals(X);
 110                                 readWriteEnds.get("muSR_WEZ").feedSignals(X);
 111                                 readWriteEnds.get("muSR_WEC").feedSignals(X);
 112                                 readWriteEnds.get("muSR_WEN").feedSignals(X);
 113                                 readWriteEnds.get("muSR_WEOVR").feedSignals(X);
 114                                 readWriteEnds.get("MSR_MUX").feedSignals(X, X, X);
 115                                 return null;
 116                         case ZERO:
 117                                 break;
 118                         default:
 119                                 throw new IllegalArgumentException("Unknown enum constant: " + I5_0Bits[i]);
 120                         }
 121
 122                 readWriteEnds.get("CT_EXP").feedSignals((IAsInt & 0b111110) == 0b001110 ? ONE : ZERO);
 123
 124                 switch (IAsInt)
 125                 {
 126                 case 0:
 127                 case 2:
 128                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ZERO);
 129                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 130                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 131                         readWriteEnds.get("muSR_WEZ").feedSignals(ONE);
 132                         readWriteEnds.get("muSR_WEC").feedSignals(ONE);
 133                         readWriteEnds.get("muSR_WEN").feedSignals(ONE);
 134                         readWriteEnds.get("muSR_WEOVR").feedSignals(ONE);
 135                         break;
 136                 case 1:
 137                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ONE);
 138                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 139                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 140                         readWriteEnds.get("muSR_WEZ").feedSignals(ONE);
 141                         readWriteEnds.get("muSR_WEC").feedSignals(ONE);
 142                         readWriteEnds.get("muSR_WEN").feedSignals(ONE);
 143                         readWriteEnds.get("muSR_WEOVR").feedSignals(ONE);
 144                         break;
 145                 case 3:
 146                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 147                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 148                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 149                         readWriteEnds.get("muSR_WEZ").feedSignals(ONE);
 150                         readWriteEnds.get("muSR_WEC").feedSignals(ONE);
 151                         readWriteEnds.get("muSR_WEN").feedSignals(ONE);
 152                         readWriteEnds.get("muSR_WEOVR").feedSignals(ONE);
 153                         break;
 154                 case 6:
 155                 case 7:
 156                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ONE);
 157                         readWriteEnds.get("muSR_OVRRET").feedSignals(ONE);
 158                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 159                         readWriteEnds.get("muSR_WEZ").feedSignals(ONE);
 160                         readWriteEnds.get("muSR_WEC").feedSignals(ONE);
 161                         readWriteEnds.get("muSR_WEN").feedSignals(ONE);
 162                         readWriteEnds.get("muSR_WEOVR").feedSignals(ONE);
 163                         break;
 164                 case 8:
 165                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 166                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 167                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 168                         readWriteEnds.get("muSR_WEZ").feedSignals(ONE);
 169                         readWriteEnds.get("muSR_WEC").feedSignals(ZERO);
 170                         readWriteEnds.get("muSR_WEN").feedSignals(ZERO);
 171                         readWriteEnds.get("muSR_WEOVR").feedSignals(ZERO);
 172                         break;
 173                 case 9:
 174                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ONE);
 175                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 176                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 177                         readWriteEnds.get("muSR_WEZ").feedSignals(ONE);
 178                         readWriteEnds.get("muSR_WEC").feedSignals(ZERO);
 179                         readWriteEnds.get("muSR_WEN").feedSignals(ZERO);
 180                         readWriteEnds.get("muSR_WEOVR").feedSignals(ZERO);
 181                         break;
 182                 case 10:
 183                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 184                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 185                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 186                         readWriteEnds.get("muSR_WEZ").feedSignals(ZERO);
 187                         readWriteEnds.get("muSR_WEC").feedSignals(ONE);
 188                         readWriteEnds.get("muSR_WEN").feedSignals(ZERO);
 189                         readWriteEnds.get("muSR_WEOVR").feedSignals(ZERO);
 190                         break;
 191                 case 11:
 192                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ONE);
 193                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 194                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 195                         readWriteEnds.get("muSR_WEZ").feedSignals(ZERO);
 196                         readWriteEnds.get("muSR_WEC").feedSignals(ONE);
 197                         readWriteEnds.get("muSR_WEN").feedSignals(ZERO);
 198                         readWriteEnds.get("muSR_WEOVR").feedSignals(ZERO);
 199                         break;
 200                 case 12:
 201                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 202                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 203                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 204                         readWriteEnds.get("muSR_WEZ").feedSignals(ZERO);
 205                         readWriteEnds.get("muSR_WEC").feedSignals(ZERO);
 206                         readWriteEnds.get("muSR_WEN").feedSignals(ONE);
 207                         readWriteEnds.get("muSR_WEOVR").feedSignals(ZERO);
 208                         break;
 209                 case 13:
 210                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ONE);
 211                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 212                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 213                         readWriteEnds.get("muSR_WEZ").feedSignals(ZERO);
 214                         readWriteEnds.get("muSR_WEC").feedSignals(ZERO);
 215                         readWriteEnds.get("muSR_WEN").feedSignals(ONE);
 216                         readWriteEnds.get("muSR_WEOVR").feedSignals(ZERO);
 217                         break;
 218                 case 14:
 219                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 220                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 221                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 222                         readWriteEnds.get("muSR_WEZ").feedSignals(ZERO);
 223                         readWriteEnds.get("muSR_WEC").feedSignals(ZERO);
 224                         readWriteEnds.get("muSR_WEN").feedSignals(ZERO);
 225                         readWriteEnds.get("muSR_WEOVR").feedSignals(ONE);
 226                         break;
 227                 case 15:
 228                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ONE);
 229                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 230                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 231                         readWriteEnds.get("muSR_WEZ").feedSignals(ZERO);
 232                         readWriteEnds.get("muSR_WEC").feedSignals(ZERO);
 233                         readWriteEnds.get("muSR_WEN").feedSignals(ZERO);
 234                         readWriteEnds.get("muSR_WEOVR").feedSignals(ONE);
 235                         break;
 236                 case 24:
 237                 case 25:
 238                 case 40:
 239                 case 41:
 240                 case 56:
 241                 case 57:
 242                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ONE);
 243                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 244                         readWriteEnds.get("muSR_CINV").feedSignals(ONE);
 245                         readWriteEnds.get("muSR_WEZ").feedSignals(ONE);
 246                         readWriteEnds.get("muSR_WEC").feedSignals(ONE);
 247                         readWriteEnds.get("muSR_WEN").feedSignals(ONE);
 248                         readWriteEnds.get("muSR_WEOVR").feedSignals(ONE);
 249                         break;
 250                 default:
 251                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ONE);
 252                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 253                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 254                         readWriteEnds.get("muSR_WEZ").feedSignals(ONE);
 255                         readWriteEnds.get("muSR_WEC").feedSignals(ONE);
 256                         readWriteEnds.get("muSR_WEN").feedSignals(ONE);
 257                         readWriteEnds.get("muSR_WEOVR").feedSignals(ONE);
 258                 }
 259                 switch (IAsInt)
 260                 {
 261                 case 0:
 262                         readWriteEnds.get("MSR_MUX").feedSignals(ZERO, ONE, ONE);
 263                         break;
 264                 case 1:
 265                         readWriteEnds.get("MSR_MUX").feedSignals(ZERO, ZERO, ONE);
 266                         break;
 267                 case 2:
 268                         readWriteEnds.get("MSR_MUX").feedSignals(ZERO, ONE, ZERO);
 269                         break;
 270                 case 3:
 271                         readWriteEnds.get("MSR_MUX").feedSignals(ZERO, ZERO, ZERO);
 272                         break;
 273                 case 4:
 274                         readWriteEnds.get("MSR_MUX").feedSignals(ONE, ONE, ZERO);
 275                         break;
 276                 case 5:
 277                         readWriteEnds.get("MSR_MUX").feedSignals(ONE, ONE, ONE);
 278                         break;
 279                 case 8:
 280                 case 9:
 281                 case 24:
 282                 case 25:
 283                 case 40:
 284                 case 41:
 285                 case 56:
 286                 case 57:
 287                         readWriteEnds.get("MSR_MUX").feedSignals(ONE, ZERO, ONE);
 288                         break;
 289                 default:
 290                         readWriteEnds.get("MSR_MUX").feedSignals(ONE, ZERO, ZERO);
 291                         break;
 292                 }
 293                 return null;
 294         }
 295
 296         static
 297         {
 298                 IndirectModelComponentCreator.setComponentSupplier(ModelAm2904RegCTInstrDecode.class.getCanonicalName(),
 299                                 (m, p, n) -> new ModelAm2904RegCTInstrDecode(m, n));
 300         }
 301 }