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632 VM/HSC 6.0 System Programmer’s Guide
1st ed., 6/30/04 - 312579601
HST
specifies the host information record area
MVC
specifies the Multi-Volume Cartridge record area
STA
specifies the station record area
VOL
specifies the volume record area
VTV
specifies the Virtual Tape Volume record area
This parameter is required.
BUFFER
buffer indicates an RX-type fullword location or a register (2) - (12) containing the
response area address for this READ request.
This parameter is required for the READ request but is ignored for OPEN and
CLOSE requests.
BUFLEN
buflen indicates an RX-type fullword location or a register (2) - (12) containing the
response area length for this READ request.
This parameter is required for the READ request but is ignored for OPEN and
CLOSE requests.
TOKEN
token indicates an RX-type fullword location or a register (2) - (12) containing a
fullword address that maintains QCDS state information for an input CDS.
The token value for an OPEN request must be zero when no associated CDS record
areas are open. In this case, OPEN assigns a value to token that must be presented
with all other QCDS requests for that CDS.
When all record areas of the CDS are closed, the token is no longer valid.
This parameter is required.
DDNAME
ddname indicates an RX-type address or a register (2) - (12) containing the address
of the eight-character DDname of an input CDS. A DDname less than eight
characters must be padded with trailing blanks.