o
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INPUTs to this function (built in the parameter list by the IUCV macro or by
the invoker):
IPBFADRI OUTPUTs from this function returned in the parameter list:
IPRCODE
Exceptions generated by this function (ABENDs generated for CP system
code):
Specification
Addressing
Operation
Protection
DESCRIBE Function
Parameter list not on a doubleword boundary.
Invalid parameter list address. The specified address is
outside the virtual machine or, for CP system code, is an
invalid real address.
Invalid buffer address.
Invoker not in supervisor state.
Invalid parameter list address. The storage key of the spec­
ified address does not match the key of the user.
DESCRIBE Parameter List Format
1 2 3 4 5 6 7 IPPATHID IIPFLAGS1 IIPRCODE IPMSGID IPTRGCLS IPBFLNIF / IPRMMSG2 ////////////////////////////
////////////////////////////////////////////////////////////// IPBFLN2F ////////////////////////////
INPUTs to this function (built in the parameter list by the IUCV macro or by
the invoker):
NONE OUTPUTs from this function returned in the parameter list: IPBFLNI IPPATHID IPRCODE IPBFLNIF IPRMMSGI
IPBFLN2 IPMSGID IPTRGCLS IPBFLN2F IPRMMSG2
IPFLAGSI
Output flags for this function (returned in IPFLAGS 1):
Inter-User Communications Vehicle 145

o 8 10 18 20 o
IPFGMCL
IPFGMID IPFGPID IPNORPY IPPRTY IPRMDATA
Always returned as 1 so that the resulting parameter list is
valid input to the next function (normally RECEIVE or REPLY). Always returned as 1 so that the resulting parameter list is
valid input to the next function (normally RECEIVE or REPLY). Always returned as 1.
This is a one-way type message.
This is a priority message.
The message data is in the IPRMMSGx fields of the
parameter list.
Exceptions generated by this function (ABENDs generated for CP system
code):
Specification
Operation
Addressing
Protection
Parameter list not on a doubleword boundary.
An external interrupt buffer has not been declared via the
DCLBFR function, or the invoker is not in supervisor
state. When the function is invoked by CP system code,
an operation exception cannot occur because an external
interrupt buffer has not been declared.
Invalid parameter list address. The specified address is
outside the virtual machine or, for CP system code, is an
invalid real address.
Invalid parameter list address. The storage key of the spec­
ified address does not match the key of the user.
. PURGE Function PURGE Parameter List Format
1 2 3 4 5 6 7 IPPATHID IPFlAGSl IIPRCODE IPMSGID IPAUDIT //////////////////////////////////////////////////
//////////////////////////////// IPSRCClS IPt'lSGTAG //////////////////////////////
///////////////////////////////////////////////////////////////// INPUTs to this function (built in the parameter list by the IUCV macro or by
the invoker):
146 VM/SP System Programmer's Guide