SNAX/HLS Management Programming Manual

Standard SNAX/HLS Definitions
Common Definitions
104708 Tandem Computers Incorporated 6–29
ZHDX–FF–RESET–SENDER
specifies which partner, in half–duplex flip–flop sessions, acquires the right to
send data after a reset. This value is meaningful only for half–duplex flip–flop
sessions that do not use brackets or whose reset state is INB.
This field has the following enumerated values:
ZHLS–VAL–HS–PLRTY–PRIM
indicates that the primary half session has the right to send data after a reset.
ZHLS–VAL–HS–PLRTY–SEC
indicates that the secondary half session has the right to send data after a reset.
ZLMO
records the value of the large message option (LMO). This value is initially set
when the session is allocated, based upon the PROFILE selected, but might be
changed by the application program. This option permits an application program
to process messages of indefinite length, because each RU of the message (chain) is
processed by the application. This value is frequently equal to ZSPI–VAL–TRUE
during file–transfer operations or when programs are being downloaded to
remote processors.
ZHS–PLRTY
identifies the LU as primary (PLU) or secondary (SLU). This value is set in the
PROFILE.
The PLU and SLU have distinct responsibilities. Generally, the PLU is the one that
is in overall control.
This field has the following enumerated values:
ZHLS–VAL–HS–PLRTY–PRIM
indicates a primary half session.
ZHLS–VAL–HS–PLRTY–SEC
indicates a secondary half session.
ZNO–SEGS
indicates whether segmentation is supported by this session. A value of ZSPI–
VAL–TRUE (rare) indicates that no segmentation is supported. A value of ZSPI–
VAL–FALSE indicates that segmentation is supported.
The segmentation referred to here is segmentation of information units packed
between layers of the SNA protocol and is not to be confused with segmentation of
SPI responses.