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