SNA Telecommunications Buffer

 X'000' BUFCHAIN DS     A            Buffer chain field
 X'004' BUFCOUNT DS     1H           Number of bytes in buffer data field
 X'006' BUFSTAT  DS     XL1          Buffer status byte
        *
        *   Bits defined in BUFSTAT
        *
        BUFSMALL EQU    X'01'        Small size buffer

 X'007' BUFRSVD  DS     XL1          Reserved field

 X'00D'          ORG   BUFTCTL
 X'008' BUFSDCT  DS    1H             *    SNA decompress count (RECEIVE)
        BUFSCLEN EQU   *-BUF          *    Length of SNA control fields
 X'00A' BUFSDATA DS    0C             *    Start of data area for SNA information