Module Nalle DMKRPA DMKRSE DMKRSP DMKSAV DMKSCH DMKSCN Entry
Points
DMKRPAGT DMKRPAPT DMKRSERR DMKRSESD DMKRSPER DMKRSPEX DMKRSPUR DMKSAVNC DMKSAVRS DMKSCHAE DMKSCHBK DMKSCHCP DMKSCHDL DMKSCHMD DMKSCHRT DMKSCHST DMKSCH80 DMKSCNAU DMKSCBFD CP Module Entry Point Directory
Attributes, Function
Resident.
Virtual storage mapping.
Page-in from DASD to user's virtual storage.
Page-out to DASD from user's virtual storage. Pageable. Real UR device I/O error handler.
Retries and attempts to recover from real unit
record device I/O errors.
Collects 3800 sense data.
Resident. Manages all spooling oFerations on the real
system unit record devices including printing and
punching user-created spool files and reading and
queueing reader files from the real card reader.
Processes spooling errors (ERP). Processes spooling operations. Entered via a GO TO when DMKDSPCH unstacks an IOBLOK with an
interruption for the spooling unit record device.
Formats the active file message for real unit
record devices.
Pageable. DMKSAVNC is entered via an LDT card from DMKLDR. DKKSiVRS is entered via a BALH fro. DMKCKP. DMKSAV saves and restores a page image count of
the CP nucleus on the system residence disk. Writes a page image copy of the CP nucleus.
Restores a page image copy of the CP nucleus.
Resident.
Maintains queues of runnable and eligible users,
alters the dispatching status of users, and
periodically recalculates the working set size
and dispatching priority of users. DMKSCH contains the routines that maintain the system
TaD clock comparator request queue and the code
that monitors users with abnormal execution.
Processes the interrupt occurring when the
favored execution measurement interval expires.
From DMKTMR. Calculates problem state time. Interruption froll real CPU timer.
Alters a user's dispatching status.
Interruption for the midnight date change.
Resets a clock comparator interruption request.
Establishes a clock ccmparator interruption
request.
Interruption for real timer at storage address 80. Resident. Scans module. Searches the chain
userid matches the
one.
of VMBLOKs one Fainted for
to by
one whose
register
Finds the next field in an input message buffer. CP Directories 1-247

CP Module Entry Point Directory __ -----------r-----------------------------------------------------, I Module Entry I I Name Points Attributes, Function I DMKSCNLI DMKSCNP DMKSCNRA DMKSCNRD DMKSCNRN DMKSCNRU DMKSCNVD DMKSCNVN DMKSCNVS DMKSCNVU DMKSEP DMKSEPSP DMKSEV DMKSEV70 DMKSIX DMKSNC DMKSNCP Searches the logged-on virtual machines for any
links to a specified minidisk. A link is any
virtual device whose ADEVBLOK pointer and relocation factor match those specified.
Finds the RCHBLOK and RCUELOK that represents the
next logical path to the device. Computes a full real device address (in cuu fora) from the RDEVADD. RCUADD, and TCHADD entries in
the real device. control unit. and channel
blocks. Computes a real device address (in CW form), from
the RDEVADD, RCUADD. and RCBADD entries in the
real device, control unit, and channel blocks.
Returns the name of the real device to the caller
in register 1.
Returns the addresses of the real channel,
control unit, and device blocks for a given real
device to to the caller.
Computes a full virtual device address (in cuu form), plus the addresses of the virtual channel
and control unit blocks from a specific virtual
device block.
Returns the name of the virtual device to the
caller in Rl. Searches all the real device blocks for a device
whose volume serial number matches the one
pointed to by Rl. Returns the addresses of the virtual channel,
control unit, and device blocks for a given real
device to the caller.
Pageable. Prints and punches the respective
separators on real spooling devices.
Pageable but locked.
output
Analyzes 2870 channel logout and sets appropriate
bits in the ECSW field according to the results
of analysis. It moves the channel logout to the
check record.
Pageable but locked.
Analyzes 2860 channel logout and sets appropriate
bits in the ECSW field according to the results
of analysis. It moves the channel logout to the
check record.
Pageable. Save a page-form version of a 3704/3705 network
control program. The name of the network control
program and the DASD location at which it is to
be saved is defined in the CP module DMKSYS. 1-248 IBM VM/370 System Logic and Problem Determination--Voluae 1