StorageTek 6 manual IPARML IUCV Parameter List, TTEWORD1, = IRT address, TTEWORD2 = IPARML bytes

Table 19. IUCV Functions

Code	Query
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

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.

Chapter 5. Problem Determination, Diagnostics, and Recovery 353

1st ed., 6/30/04 - 312579601