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Chapter 5. Problem Determination, Diagnostics, and Recovery 353
1st ed., 6/30/04 - 312579601
TTEWORD1 = IRT address
TTEWORD2 = IPARML (bytes 0-3)
TTEWORD3 = IPARML (bytes 4-7)
IPARML (IUCV Parameter List)
The IPARML (IUCV Parameter List) is a VM data structure that contains IUCV
information passed to and from the user of IUCV services.
At the time a virtual machine executes the IUCV instruction, a register points to an
IPARML containing information about the request. The IUCV instruction modifies the
caller’s IPARML in storage.
The IPARML is also used to map the ‘‘IUCV external interrupt buffer’’ that is filled in at
the time an IUCV external interrupt occurs. It contains information describing the event
that just occurred.
The first 8 bytes of the IPARML are saved in the TTE when tracing IUCV events.
IPRCODE is the return code from the IUCV instruction. A list of IPRCODE meanings
follows these IPARML samples.
Refer to VM IUCV documentation for details on this and other fields.
X’03’ DESCRIBE
X’04’ * SEND
X’05’ * RECEIVE
X’06’ * REPLY
X’07’ TEST COMPLETION
X’08’ * REJECT
X’09’ PURGE
X’0A’ * ACCEPT
X’0B’ * CONNECT
X’0C’ * DECLARE BUFFER
X’0D’ * QUIESCE
X’0E’ RESUME
X’0F’ * SEVER
X’10’ SET MASK
X’11’ SETCMASK
Table 19. IUCV Functions
Code Query