net.mograsim.logic.model.am2900/src/net/mograsim/logic/model/am2900/components/am2904/RegCTInstrDecode.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.Wire.ReadEnd;
  12 import net.mograsim.logic.core.wires.Wire.ReadWriteEnd;
  13 import net.mograsim.logic.model.model.ViewModelModifiable;
  14 import net.mograsim.logic.model.model.components.atomic.SimpleRectangularHardcodedGUIComponent;
  15 import net.mograsim.logic.model.model.wires.Pin;
  16 import net.mograsim.logic.model.serializing.IndirectGUIComponentCreator;
  17 import net.mograsim.logic.model.snippets.symbolrenderers.PinNamesSymbolRenderer.PinNamesParams.Position;
  18
  19 public class RegCTInstrDecode extends SimpleRectangularHardcodedGUIComponent
  20 {
  21         public RegCTInstrDecode(ViewModelModifiable model, String name)
  22         {
  23                 super(model, name, "Instruction\ndecode");
  24                 setSize(80, 80);
  25                 addPin(new Pin(this, "I", 6, 0, 40), Usage.INPUT, Position.RIGHT);
  26                 // muSR MUX:
  27                 // 00: 0
  28                 // 01: 1
  29                 // 10: M
  30                 // 11: I
  31                 addPin(new Pin(this, "muSR_MUX", 2, 80, 10), Usage.OUTPUT, Position.LEFT);
  32                 addPin(new Pin(this, "muSR_OVRRET", 1, 80, 20), Usage.OUTPUT, Position.LEFT);
  33                 addPin(new Pin(this, "muSR_CINV", 1, 80, 30), Usage.OUTPUT, Position.LEFT);
  34                 addPin(new Pin(this, "muSR__WEZ", 1, 80, 40), Usage.OUTPUT, Position.LEFT);
  35                 addPin(new Pin(this, "muSR__WEC", 1, 80, 50), Usage.OUTPUT, Position.LEFT);
  36                 addPin(new Pin(this, "muSR__WEN", 1, 80, 60), Usage.OUTPUT, Position.LEFT);
  37                 addPin(new Pin(this, "muSR__WEOVR", 1, 80, 70), Usage.OUTPUT, Position.LEFT);
  38                 // MSR MUX:
  39                 // 000: 0
  40                 // 001: 1
  41                 // 010: mu
  42                 // 011: Y
  43                 // 100: I
  44                 // 101: I, invert C
  45                 // 110: Swap OVR and C
  46                 // 111: _M
  47                 addPin(new Pin(this, "MSR_MUX", 3, 40, 0), Usage.OUTPUT, Position.BOTTOM);
  48                 // CT SRC MUX:
  49                 // 00: mu
  50                 // 01: mu
  51                 // 10: M
  52                 // 11: I
  53                 addPin(new Pin(this, "CT_SRC_MUX", 2, 10, 80), Usage.OUTPUT, Position.TOP);
  54                 // CT MUX:
  55                 // see Am2900 Family Data Book, Am2904, Table 4 (CT_MUX2-0 = I3-1)
  56                 addPin(new Pin(this, "CT_MUX", 3, 30, 80), Usage.OUTPUT, Position.TOP);
  57                 addPin(new Pin(this, "CT_INV", 1, 50, 80), Usage.OUTPUT, Position.TOP);
  58                 addPin(new Pin(this, "CT_EXP", 1, 70, 80), Usage.OUTPUT, Position.TOP);
  59         }
  60
  61         @Override
  62         protected Object recalculate(Object lastState, Map<String, ReadEnd> readEnds, Map<String, ReadWriteEnd> readWriteEnds)
  63         {
  64                 Bit[] IBits = readEnds.get("I").getValues().getBits();
  65                 int IAsInt = 0;
  66                 for (int i = 0; i < 6; i++)
  67                         switch (IBits[5 - i])
  68                         {
  69                         case ONE:
  70                                 IAsInt |= 1 << i;
  71                                 break;
  72                         case U:
  73                                 for (ReadWriteEnd e : readWriteEnds.values())
  74                                         e.feedSignals(U);
  75                                 return null;
  76                         case X:
  77                         case Z:
  78                                 for (ReadWriteEnd e : readWriteEnds.values())
  79                                         e.feedSignals(X);
  80                                 return null;
  81                         case ZERO:
  82                                 break;
  83                         default:
  84                                 throw new IllegalArgumentException("Unknown enum constant: " + IBits[i]);
  85                         }
  86                 switch (IAsInt)
  87                 {
  88                 case 0:
  89                 case 2:
  90                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ONE);
  91                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
  92                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
  93                         readWriteEnds.get("muSR__WEZ").feedSignals(ZERO);
  94                         readWriteEnds.get("muSR__WEC").feedSignals(ZERO);
  95                         readWriteEnds.get("muSR__WEN").feedSignals(ZERO);
  96                         readWriteEnds.get("muSR__WEOVR").feedSignals(ZERO);
  97                         break;
  98                 case 1:
  99                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ZERO);
 100                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 101                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 102                         readWriteEnds.get("muSR__WEZ").feedSignals(ZERO);
 103                         readWriteEnds.get("muSR__WEC").feedSignals(ZERO);
 104                         readWriteEnds.get("muSR__WEN").feedSignals(ZERO);
 105                         readWriteEnds.get("muSR__WEOVR").feedSignals(ZERO);
 106                         break;
 107                 case 3:
 108                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 109                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 110                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 111                         readWriteEnds.get("muSR__WEZ").feedSignals(ZERO);
 112                         readWriteEnds.get("muSR__WEC").feedSignals(ZERO);
 113                         readWriteEnds.get("muSR__WEN").feedSignals(ZERO);
 114                         readWriteEnds.get("muSR__WEOVR").feedSignals(ZERO);
 115                         break;
 116                 case 6:
 117                 case 7:
 118                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ONE);
 119                         readWriteEnds.get("muSR_OVRRET").feedSignals(ONE);
 120                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 121                         readWriteEnds.get("muSR__WEZ").feedSignals(ZERO);
 122                         readWriteEnds.get("muSR__WEC").feedSignals(ZERO);
 123                         readWriteEnds.get("muSR__WEN").feedSignals(ZERO);
 124                         readWriteEnds.get("muSR__WEOVR").feedSignals(ZERO);
 125                         break;
 126                 case 8:
 127                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 128                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 129                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 130                         readWriteEnds.get("muSR__WEZ").feedSignals(ZERO);
 131                         readWriteEnds.get("muSR__WEC").feedSignals(ONE);
 132                         readWriteEnds.get("muSR__WEN").feedSignals(ONE);
 133                         readWriteEnds.get("muSR__WEOVR").feedSignals(ONE);
 134                         break;
 135                 case 9:
 136                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ZERO);
 137                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 138                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 139                         readWriteEnds.get("muSR__WEZ").feedSignals(ZERO);
 140                         readWriteEnds.get("muSR__WEC").feedSignals(ONE);
 141                         readWriteEnds.get("muSR__WEN").feedSignals(ONE);
 142                         readWriteEnds.get("muSR__WEOVR").feedSignals(ONE);
 143                         break;
 144                 case 10:
 145                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 146                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 147                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 148                         readWriteEnds.get("muSR__WEZ").feedSignals(ONE);
 149                         readWriteEnds.get("muSR__WEC").feedSignals(ZERO);
 150                         readWriteEnds.get("muSR__WEN").feedSignals(ONE);
 151                         readWriteEnds.get("muSR__WEOVR").feedSignals(ONE);
 152                         break;
 153                 case 11:
 154                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ZERO);
 155                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 156                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 157                         readWriteEnds.get("muSR__WEZ").feedSignals(ONE);
 158                         readWriteEnds.get("muSR__WEC").feedSignals(ZERO);
 159                         readWriteEnds.get("muSR__WEN").feedSignals(ONE);
 160                         readWriteEnds.get("muSR__WEOVR").feedSignals(ONE);
 161                         break;
 162                 case 12:
 163                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 164                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 165                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 166                         readWriteEnds.get("muSR__WEZ").feedSignals(ONE);
 167                         readWriteEnds.get("muSR__WEC").feedSignals(ONE);
 168                         readWriteEnds.get("muSR__WEN").feedSignals(ZERO);
 169                         readWriteEnds.get("muSR__WEOVR").feedSignals(ONE);
 170                         break;
 171                 case 13:
 172                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ZERO);
 173                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 174                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 175                         readWriteEnds.get("muSR__WEZ").feedSignals(ONE);
 176                         readWriteEnds.get("muSR__WEC").feedSignals(ONE);
 177                         readWriteEnds.get("muSR__WEN").feedSignals(ZERO);
 178                         readWriteEnds.get("muSR__WEOVR").feedSignals(ONE);
 179                         break;
 180                 case 14:
 181                         readWriteEnds.get("muSR_MUX").feedSignals(ZERO, ZERO);
 182                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 183                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 184                         readWriteEnds.get("muSR__WEZ").feedSignals(ONE);
 185                         readWriteEnds.get("muSR__WEC").feedSignals(ONE);
 186                         readWriteEnds.get("muSR__WEN").feedSignals(ONE);
 187                         readWriteEnds.get("muSR__WEOVR").feedSignals(ZERO);
 188                         break;
 189                 case 15:
 190                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ZERO);
 191                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 192                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 193                         readWriteEnds.get("muSR__WEZ").feedSignals(ONE);
 194                         readWriteEnds.get("muSR__WEC").feedSignals(ONE);
 195                         readWriteEnds.get("muSR__WEN").feedSignals(ONE);
 196                         readWriteEnds.get("muSR__WEOVR").feedSignals(ZERO);
 197                         break;
 198                 case 24:
 199                 case 25:
 200                 case 40:
 201                 case 41:
 202                 case 56:
 203                 case 57:
 204                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ONE);
 205                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 206                         readWriteEnds.get("muSR_CINV").feedSignals(ONE);
 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(ZERO);
 211                         break;
 212                 default:
 213                         readWriteEnds.get("muSR_MUX").feedSignals(ONE, ONE);
 214                         readWriteEnds.get("muSR_OVRRET").feedSignals(ZERO);
 215                         readWriteEnds.get("muSR_CINV").feedSignals(ZERO);
 216                         readWriteEnds.get("muSR__WEZ").feedSignals(ZERO);
 217                         readWriteEnds.get("muSR__WEC").feedSignals(ZERO);
 218                         readWriteEnds.get("muSR__WEN").feedSignals(ZERO);
 219                         readWriteEnds.get("muSR__WEOVR").feedSignals(ZERO);
 220                 }
 221                 switch (IAsInt)
 222                 {
 223                 case 0:
 224                         readWriteEnds.get("MSR_MUX").feedSignals(ONE, ONE, ZERO);
 225                         break;
 226                 case 1:
 227                         readWriteEnds.get("MSR_MUX").feedSignals(ONE, ZERO, ZERO);
 228                         break;
 229                 case 2:
 230                         readWriteEnds.get("MSR_MUX").feedSignals(ZERO, ONE, ZERO);
 231                         break;
 232                 case 3:
 233                         readWriteEnds.get("MSR_MUX").feedSignals(ZERO, ZERO, ZERO);
 234                         break;
 235                 case 4:
 236                         readWriteEnds.get("MSR_MUX").feedSignals(ZERO, ONE, ONE);
 237                         break;
 238                 case 5:
 239                         readWriteEnds.get("MSR_MUX").feedSignals(ONE, ONE, ONE);
 240                         break;
 241                 case 8:
 242                 case 9:
 243                 case 24:
 244                 case 25:
 245                 case 40:
 246                 case 41:
 247                 case 56:
 248                 case 57:
 249                         readWriteEnds.get("MSR_MUX").feedSignals(ONE, ZERO, ONE);
 250                         break;
 251                 default:
 252                         readWriteEnds.get("MSR_MUX").feedSignals(ZERO, ZERO, ONE);
 253                         break;
 254                 }
 255                 readWriteEnds.get("CT_SRC_MUX").feedSignals(IBits[0], IBits[1]);
 256                 readWriteEnds.get("CT_INV").feedSignals(IBits[5]);
 257                 readWriteEnds.get("CT_MUX").feedSignals(IBits[2], IBits[3], IBits[4]);
 258                 readWriteEnds.get("CT_EXP").feedSignals((IAsInt & 0b1110) == 0b1110 ? ONE : ZERO);
 259                 return null;
 260         }
 261
 262         static
 263         {
 264                 IndirectGUIComponentCreator.setComponentSupplier(RegCTInstrDecode.class.getCanonicalName(),
 265                                 (m, p, n) -> new RegCTInstrDecode(m, n));
 266         }
 267 }