-- File: [Indigo]<Sakura>Dragon>DragonProcessorImpl4.sak
-- Dragon processor with random fetch
-- 10-Mar-82 11:24:06

DIRECTORY
  DragonCache: TYPE, 
  DragonProcessor: TYPE, 
  RandomCard: TYPE, 
  SakuraRT: TYPE, 
  SimIO: TYPE;

DragonProcessorImpl4: MONITOR
  IMPORTS DragonCache, RandomCard, SakuraRT, SimIO
  EXPORTS DragonProcessor
  
  = BEGIN
  Processor: PUBLIC PROC
       [ClockA, ClockB, Fault, Reject: SakuraRT.Handle, InData: SakuraRT.Handle, 
        Op: SakuraRT.Handle, RQ: SakuraRT.Handle, OutData: SakuraRT.Handle] = {
    
    Store: PROC [loc: CARDINAL, data: LONG CARDINAL] = {
      vp: LONG CARDINAL; 
      bl: INTEGER [0..37B]; 
      word: INTEGER [0..3]; 
      printval: LONG CARDINAL;
      [vp, bl, word] _ SplitAddress[loc]; 
      printval _ word + bl * 4 + vp * 128; 
      SakuraRT.GetNew[ClockB, TRUE];
       {SakuraRT.Put[RQ, NEW[BOOLEAN _ TRUE]]; 
        SakuraRT.Put[Op, NEW[DragonCache.PbusOp _ Store]]; 
        SakuraRT.Put[OutData, NEW[DragonCache.PbusType _ [Instruction[vp, bl, word]]]]}; 
      DO SakuraRT.GetNew[ClockA, TRUE];
          IF NOT NARROW[SakuraRT.Get[Reject], REF BOOLEAN]^ THEN EXIT
         ENDLOOP; 
      SimIO.WF1["    Store started %ld*n", @printval]; 
      SakuraRT.GetNew[ClockB, TRUE];
       SakuraRT.Put[OutData, NEW[DragonCache.PbusType _ [Data[data]]]]; 
      -- Match
      SakuraRT.GetNew[ClockB, TRUE]; SakuraRT.Put[RQ, NEW[BOOLEAN _ FALSE]]; 
      SimIO.WF1["    Store finished %ld*n", @printval]}; 
    
    StoreAndRead: PROC [loc, prevloc: CARDINAL, data, prevdata: LONG CARDINAL] = {
      vp, prevvp: LONG CARDINAL; 
      bl, prevbl: INTEGER [0..37B]; 
      word, prevword: INTEGER [0..3]; 
      printval: LONG CARDINAL;
      [vp, bl, word] _ SplitAddress[loc]; 
      printval _ word + bl * 4 + vp * 128; 
      SakuraRT.GetNew[ClockB, TRUE];
       {SakuraRT.Put[RQ, NEW[BOOLEAN _ TRUE]]; 
        SakuraRT.Put[Op, NEW[DragonCache.PbusOp _ Store]]; 
        SakuraRT.Put[OutData, NEW[DragonCache.PbusType _ [Instruction[vp, bl, word]]]]}; 
      DO SakuraRT.GetNew[ClockA, TRUE];
          IF NOT NARROW[SakuraRT.Get[Reject], REF BOOLEAN]^ THEN EXIT
         ENDLOOP; 
      [prevvp, prevbl, prevword] _ SplitAddress[prevloc]; 
      SakuraRT.Delay[40]; 
      DragonCache.CheckVal[prevvp, prevbl, prevword, prevdata]; 
      SimIO.WF1["    Store started %ld*n", @printval]; 
      SakuraRT.GetNew[ClockB, TRUE];
       SakuraRT.Put[OutData, NEW[DragonCache.PbusType _ [Data[data]]]]; 
      -- Match
      SakuraRT.GetNew[ClockB, TRUE]; SakuraRT.Put[RQ, NEW[BOOLEAN _ FALSE]]; 
      SimIO.WF1["    Store finished %ld*n", @printval]}; 
    
    Read: PROC [prevloc: CARDINAL, prevdata: LONG CARDINAL] = {
      prevvp: LONG CARDINAL; 
      prevbl: INTEGER [0..37B]; 
      prevword: INTEGER [0..3];
      DO SakuraRT.GetNew[ClockA, TRUE];
          IF NOT NARROW[SakuraRT.Get[Reject], REF BOOLEAN]^ THEN EXIT
         ENDLOOP; 
      [prevvp, prevbl, prevword] _ SplitAddress[prevloc]; 
      SakuraRT.Delay[40]; 
      DragonCache.CheckVal[prevvp, prevbl, prevword, prevdata]}; 
    
    SplitAddress: PROC [loc: CARDINAL] RETURNS [vp: LONG CARDINAL, 
                                                bl: INTEGER [0..37B], 
                                                word: INTEGER [0..3]] = {
      word _ loc MOD 4; 
      loc _ loc / 4; 
      bl _ loc MOD 40B; 
      vp _ loc / 40B}; 
    
    loc, prevloc: CARDINAL; 
    data, prevdata: LONG CARDINAL;
    
    {ENABLE {ABORTED => GO TO Aborted};
     SakuraRT.Put[RQ, NEW[BOOLEAN _ FALSE]]; 
     SakuraRT.GetNew[ClockB, TRUE]; NULL; 
     SakuraRT.GetNew[ClockB, TRUE]; NULL; 
     [] _ RandomCard.InitRandom[-1]; 
     prevloc _ RandomCard.Choose[0, 3777B]; 
     prevdata _ RandomCard.Random[] * 200000B + RandomCard.Random[]; 
     Store[prevloc, prevdata]; 
     THROUGH [0..300] DO
         loc _ RandomCard.Choose[0, 3777B]; 
         data _ RandomCard.Random[] * 200000B + RandomCard.Random[]; 
         StoreAndRead[loc, prevloc, data, prevdata]; 
         prevloc _ loc; 
         prevdata _ data
         ENDLOOP; 
     Read[prevloc, prevdata]; 
     SimIO.WF0["++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"]; 
     SakuraRT.ProcessEnd[]}
    EXITS
      Aborted => SakuraRT.AbortAll[]};
  
  END.