SNAX/HLS Application Programming Manual

Return-Code Categories
The Standard Verb Interface
104707 Tandem Computers Incorporated 4–3
Figure 4-3. Flow of a Queued Operation
USER SNAX/HLS
:
:
develop VERB+MSG
:
:
CALL WRITEREAD
syntax checks
resource checks
FSM checks
state checks
initiate operation
(read completes)
(RC-FORTHCOMING)
: SNALU interface
: (Wait for response)
: response received
:
CALL WRITEREAD
(RECEIVE-DATA verb) syntax checks
resource checks
formulate response
(read completes)
interpret verb return code
Return-Code
Categories
Figure 4-4 indicates the sequence of checks performed by SNAX/HLS in processing a
verb. You can find more information on the return code in Appendix A of the
SNAX/HLS Diagnosis and Support Manual.
Note The Tandem SNA access method illustrated in Figure 4-4 is SNAX/XF. The process is the same for
SNAX/CDF.