*DECK C$DMRD1 
          IDENT  C$DMRD1
          SST 
          COMMENT  ISSUE CDCS SEQUENTIAL -READ- CALL
          B1=1
          ENTRY  C.DMRD1
*                ISSUE THE CDCS SEQUENTIAL -READ- CALL
*                ON ENTRY A0=FIT ADDRESS
 C.DMRD1  BSS    1
 CDCS     IFNE   OP.DCS,OP.NO 
          SX7    A0          FIT ADDRESS
          SA7    =XC.DMPAR
          RJ     =XC.DMDFO   GET FILE ORDINAL 
 CDCS2    IFEQ   OP.DCS,OP.DCS2 
          SA1    X7          FETCH FILE ORDINAL INTO X1 
 CDCS2    ENDIF 
          SA7    A7+B1       ADDRESS OF FILE ORDINAL
          SX7    B0          NO ADDRESS FOR CDCS
          SA7    A7+B1        TO RETURN -RECORD CODE- 
 CDCS2    IFEQ   OP.DCS,OP.DCS2 
          MX2    1
          BX7    X2+X1       SET TOPMOST BIT TO REQUEST THAT CDCS 
          SA7    A1          RETURN THE RECORD LENGTH 
 CDCS2    ENDIF 
          SA1    =XC.DMPAR   CDCS 
 CDCS2    IFEQ   OP.DCS,OP.DCS1 
          RJ     =XDM$RD1     SEQUENTIAL -READ- CALL
 CDCS2    ELSE
          RJ     =XDB$RD1    CDCS 2 SEQUENTIAL -READ- CALL
 CDCS2    ENDIF 
          RJ     =XC.A0B1    RESTORE A0 (FIT ADDRESS) AND B1(=1)
          EQ     C.DMRD1
 CDCS     ENDIF 
          END 
