IDENT  MULTCB
          ENTRY  LOADCB
          ENTRY  RELSCB
          TITLE  MULTCB - ACCESS MULTIPLE COMMUNICATION BLOCKS.
*COMMENT  MULTCB - ACCESS MULTIPLE C.B.-S.
          COMMENT  COPYRIGHT CONTROL DATA SYSTEMS INC.  1992.
          SPACE  4,10
***       MULTCB - ACCESS MULTIPLE COMMUNICATION BLOCKS.
*         J.R. HOGUE.  74/11/06.
          SPACE  4
*CALL,COMCMAC
*CALL,COMKMAC
*CALL     COMSPRD
 LOADCB   TITLE  READ MULTIPLE COMMUNICATION BLOCK INPUT.
***       LOADCB - READ MULTIPLE COMMUNICATION BLOCK INPUT.
*
*         CALL FORMAT -
*
*         FORTRAN EXTENDED
*                CALL LOADCB(ADDR,LEN,STAT,REL)
*         COBOL
*                ENTER LOADCB USING ADDR STAT REL.
*
*         WHERE  ADDR = FWA TO LOAD THE COMMUNICATION BLOCK(S).
*                LEN  = MAXIMUM AMOUNT OF DATA TO TRANSFER TO THE TASK.
*                STAT = AMOUNT OF DATA TRANSFERED TO THE TASK.
*                REL  = NONZERO TO RELEASE THE COMMUNICATION BLOCK(S).


 LOADCB   SUBR               ENTRY/EXIT
          SB1    1
          SX6    X1          CHECK COBOL CALL
          BX7    X1-X6
          SA3    A1+1        READ LENGTH OR STATUS ADDRESS
          NZ     X7,LOA3     IF COBOL CALL
          SA2    X3          READ LENGTH
          SA3    A3+1        ADDRESS OF STATUS WORD
 LOA1     SA4    A3+B1       READ REL PARAMETER
          MX7    1           REL BIT
          SA5    X4
          LX2    30
          BX6    X6+X2
          ZR     X5,LOA2     IF REL NOT REQUESTED
          BX6    X7+X6
 LOA2     SA6    LOAA        REQUEST CONTROL WORD
          LOADCB LOAA        LOAD COMMUNICATION BLOCKS
          SA6    X3          WRITE STATUS
          JP     LOADCBX

*         COBOL BUFFER LENGTH IN CHARACTERS TO WORDS, DISCARD REMAINDERE

 LOA3     LX7    -36         BUFFER LENGTH IN CHARACTERS
          SX4    X7
          SX7    10D         DIVIDE BY 10 AND TRUNCATE
          IX2    X4/X7
          JP     LOA1

 LOAA     BSS    1
 RELSCB   TITLE  RELEASE MULTIPLE COMMUNICATION BLOCK(S).
***       RELSCB - RELEASE THE MULTIPLE COMMUNICATION BLOCK(S) USED TO
*         CONTAIN LARGE TRANSACTION INPUTS.
*
*         CALL FORMAT -
*
*         FORTRAN EXTENDED
*                CALL RELSCB
*         COBOL
*                ENTER RELSCB.


 RELSCB   SUBR               ENTRY/EXIT
          RELSCB             RELEASE ANY EXTRA COMMUNICTION BLOCKS
          EQ     RELSCBX     RETURN


          END