UNLOCK Use the UlLOCK coaaand to unlock page frames previously locked by a LOCK coamand. The format of the UlLOCK command is: UNLOCK userid SISTE! firstpage
lastpage VIRT=REAL V=R {
userid }
firstpage lastpage SISTE! { VIRT=REAL} V=R is the user identification of the virtual user previously
specified in a LOCK com.and. specifies to unlock a previously locked pageable CP nucleus
page.
is the hexadecimal value of the first page to be unlocked.
is the hexadeciaal value of the last page to be unlocked. !2!!: Por firstpage and lastpage, only the page numbers are
specified. For example, to unlock USERA's virtual storage
locations 1'12000' to X'2CFFF', the following co.mand should
be issued: UBLOCK USERl 12 2C releases for normal paging use all the page fra.es noraally
for the virtual=real machine if the area is not occupied by a
virtual=real virtual machine. !2!!: Once the virtual=real area is released, it cannot be
reactivated to run another virtual=real machine until V8/370 is loaded again. COft!lID CO!PLBTE occurs even if some (or all) of the pages unlocked were not
previously locked.
152 V"/370 Operator's Guide
VARY Use the VARY command to mark a device available or unavailable for use by a user or the control program. (For 370x resources running in NCP or
PEP mode, or remote 3270 resources, use the NETWORK VIRY coamand.) Spooled unit record devices marked offline are reaeabered by the VB/370 system through any system failures. A shutdown and subsequent cold
start assumes that all devices are available. The foraat of the VIRY comlRand is: VARY OILIIE OFFLINE raddr {
ONLine
} {raddr-raddr }
OFfline •• PROCessor nn makes a device(s) previously offline available.
makes the device(s) unavailable.
is the real address of the
altered. Bultiple devices as
addresses aay be specified.
device whose
well as
status
a range
is to be
of device PROCESSOR nn
is the processor to be made available or unavailable. The
value of nn is the processor address (hexadeciaal value froa 00 through 3F) established when the prccessor is installed. 1. If the device specified is a 2305, the address .cst be for the
first of 8 "exposures," that is, address xxO or xx8.
2. Execution of the VIRY device address (raddrj coa.and is
accomplished in two phases. In phase one, the command line is
checked to see if it is syntactically correct. If it is not, the command line is rejected. If the command line is correct, then the VARY ONLINE/OFFLINE process begins. When processing aultiple
devices or a range of devices, VIRY command processing continues
regardless of whether or not an error is encountered when attempting to vary anyone of the devices online/offline. In error aessage will be issued for every device that encounters an error
situation. In inforaational aessage will be issued for those
devices in the range or those aultiple addresses on the command line that could be varied online/offline.
3. Execution of the VIRY PROCESSOR nn coaaand is accoaplished as
follows. Comaand processing checks the coamand authority and syntax and that the specified processor nuaber is valid. If the co.mand is to vary the processor online, a check will be aade to
see if it is already online. If it is not, and if the processor is
available and operational, co.mand processing will establish
prefixing, initialize the control registers and prefix areas, and
set the clock comparator and CPU tiaer; the systea can' then
function in attached processor mode. Section 3. CP Coaaands 153
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