*DECK LFGMOVW 
USETEXT LFGWKBS 
      PROC LFGMOVW(AN,AA,BPOS,NWDS,IW60,CKSM,MEMIN);
      BEGIN                  #MOVWD#
*IF DEF,IMS 
# 
**    LFGMOVW - MOVE WORDS. 
* 
*     JJ MCAFEE  75/10/01 
*     M. E. VATCHER  81/02/23 
* 
*     LFGMOVW MOVES AND SHIFTS LOAD DATA FROM AN INPUT ARRAY TO 
*     A SM ARRAY. 
* 
*     PROC LFGMOVW(AN,AA,BPOS,NWDS,IW60,CKSM,MEMIN) 
* 
*     ENTRY AN        STARTING WORD OF SOURCE ARRAY 
*           AA        STARTING WORD OF DESTINATION ARRAY
*           BPOS      STARTING BIT POSITION IN DESTINATION ARRAY
*           NWDS      16 BIT WORD COUNT 
*           CKSM      CHECKSUM
*           MEMIN     INPUT BUFFER FWA
* 
*     EXIT  IW60      60 BIT WORD COUNT 
* 
*     METHOD
* 
*     LFGMOVW PACKS THE MEMORY IMAGE OR OVERLAY IMAGE RECORD INTO 
*     THE WORKING STORAGE AREA *PDATA*.  CHECKSUM IS STORED FIRST.
*     THE DATA IS TAKEN FROM SOURCE *INBUF* AND SENT TO DESTINATION 
*     *PBUF*.  THERE ARE TWO POSSIBLE CASES: 1)WHERE ALL THE DATA IS IN 
*     ONE WORD, AND 2) WHERE DATA IS SPLIT BETWEEN THE WORDS. 
*     LOOP FOR 105 16 BIT WORDS OR FEWER UNTIL PACKING COMPLETE.
* 
# 
*ENDIF
        ITEM BPOS,NWDS,IW60,CKSM; 
      ITEM AA;
      ITEM AN;
      ITEM I U; 
        ITEM SINDX,DINDX,CKS,AWDS,SST,DST;
      ITEM SBC,DBC,SWD,SFCU,SWS;
  
      ARRAY MEMIN [0:0] S(1); 
        BEGIN 
        ITEM INBUF U; 
        END 
  
      FOR I = 0 STEP 1 UNTIL 35 DO
        BEGIN 
        PBUF[I] = 0;
        END 
      SINDX = AN;                         # SET START OF SOURCE ARRAY # 
      DINDX = AA;                          # SET START OF DESTN ARRAY  #
      IW60 = AA + 1;         # NUMBER OF 60 BIT WORDS                  #
      AWDS = NWDS + 1;                     # NO. OF 16 BIT WORDS# 
      SST = 0;                             # SOURCE BIT COUNT # 
      DST = BPOS;                          # DESTINATION BIT COUNT# 
      SBC = 16; DBC = 16; 
      SWD = CKSM; 
      GOTO LOOP2;                          #GO STORE CKSUM FIRST# 
LOOP1:IF SST LQ 44 THEN                    # SOURCE WORD ALL IN ONE # 
            BEGIN 
              SWD = B<SST,SBC>INBUF[SINDX]; 
              SST = SST + 16; 
              IF SST EQ 60 THEN 
               BEGIN
                SST = 0;
                SINDX = SINDX + 1;
               END
            END 
          ELSE                             # SOURCE WORD SPLIT OVER 2 # 
            BEGIN 
              SFCU = 60 - SST;             # SET BFTS LEFT IN WORD 1 #
              SWS = 44;                    # HOLD WORD START POSITION#
                                           # HOLD WORD BFT COUNT #
              B<SWS,SFCU>SWD  = B<SST,SFCU>INBUF[SINDX];
              SST = 0;                     # RESET START COUNT# 
              SWS = SWS + SFCU;            # ADJUST HOLD WORD START POS#
              SFCU = 16 - SFCU;            # ADJUST NO. OF BITS LEFT #
              SINDX = SINDX + 1;           # ADJUST SOURCE INDEX #
              B<SWS,SFCU>SWD = B<SST,SFCU>INBUF[SINDX]; 
              SST = SST + SFCU;            # ADJUST START POSITION #
            END 
LOOP2:IF DST LQ 44 THEN                    # DEST. WORD ALL IN ONE WORD#
            BEGIN 
              B<DST,DBC>PBUF[DINDX] = SWD;
              DST = DST + 16;              # ADJUST DESIGN. START POS. #
              IF DST EQ 60 THEN 
               BEGIN
                DST = 0;
                DINDX = DINDX + 1;
                IW60 = IW60 + 1;
               END
            END 
          ELSE
            BEGIN 
              SFCU = 60-DST;               # SET BITS IN FIRST WORD#
              SWS = 44;                    # SET START OF HOLD WORD # 
              B<DST,SFCU>PBUF[DINDX] = B<SWS,SFCU>SWD;
              DINDX = DINDX + 1;           # INC. DESTINATION INDEX # 
              IW60 = IW60 + 1;             # INC. 60 BIT WORD COUNT # 
              SWS = SWS + SFCU;            # ADJ. HOLD WORD START POS. #
              DST = 0;                     # ADJ. DEST. WORD START POS.#
              SFCU = 16 - SFCU;            # ADJ. BIT COUNT # 
              B<DST,SFCU>PBUF[DINDX] = B<SWS,SFCU>SWD;
              DST = DST + SFCU; 
            END 
      AWDS = AWDS - 1;                     #DECREMENT 16 BIT WORD COUNT#
      IF AWDS GR 0 THEN GOTO LOOP1; 
      RETURN; 
      END 
      TERM