CP Module Entry Point Directory I Module I Entry
Name I Points Attributes, Function DMKFRE DMKGIO DMKGRF DMKGRT DMKGRW DKKHVC DMKHVD DMKIOC DMKFREE DMKFRERC DMKFRERS DMKFRET DMKFRETR DMKGIOEX DMKGRFIN DKKGRFEN DMKGRFIC DMKGRTAB D5KGRTF5 DMKHVCAL DMKHVDAL DMKIOCVT Resident.
Free storage manager.
Gets space from free storage and processes the CP assist FREE instruction (E600). Special entry point to acquire free storage. If
the storage request cannot be satisfied, a
condition code of one is returned to the caller.
Returns subpools to free storage chain.
Returns space to free storage and processes the CP assist FRET instruction (E601). Returns space to free storage; does not release
pages. Pageable. Initializes supervisor operations for tape, unit
record, and nonstandard disk I/O operations.
Checks device validity and initializes I/O operations on tape, unit record, and nonstandard
disk I/O programs per supervisor call. This module presents resultant condition code and CSW (if warranted) to the user.
Resident.
Supports local 3270, 3218 Model 2A, and 3066 devices. DMKGRF processes interruptions and CCWs for the The processing includes message
handling and screen management.
Handles the interruption via an IOBLOK. Enables or disables the device. Starts a CONTASK from DKKQCN. Resident.
Contains common data area and subroutines for 3270 display support.
Computes the next tab position and creates the
data stream to position the cursor and insert a
logical tab character if necessary.
Brings in the VHj370 logo and initializes buffer
and the CClls to write the logo in DMKGRT and
DMKRGB.
Non-executable.
Contains CClls and data for 3278 Model 2A operator
display console.
Resident. Perforas services for the virtual .achine as
requested via the DIAGNOSE instruction. The
specific service performed depends on the code in
the DIAGNOSE instruction. Pageable. Performs services for virtual .achines as
requested by the DIAGNOSE instruction.
Converts VM/370 device tYIe to OS/VS device type. CP Directories 1-239

CP Module Entry Point Directory Ii Module I Entry
Name I Points I DMKIOE DMKIOECC DMKIOECB DMKIOECJ DMKIOEFL DMKIOEFM DMKIOEMC DMKIOEMB DMKIOENV DMKIOEOB DMKIOEQQ DMKIOERC DMKIOERN DMKIOERR DMKIOESD DMKIOESR DMKIOEST DMKIOEVR DMKIOF DMKIOFC1 DMKIOFIN DMKIOFOB DMKIOFM 1 DMKIOFST DMKIOFVR Attributes, Function
Resident.
This is the error recording module. It receives
all requests for error recording and passes
control to the proper pageable routine after
checking if a recording is in progress. If a
previous request for error recording is in
progress, the current request is queued on the
appropriate queue for recording at a later time. It makes a check to determine if the recording
cylinder is full. DMKIOE also interfaces with the
pageable module that initializes and erases the
error recording cylinders.
Entry for a channel error condition occurring on
a SIO in DMKIOS with a response condition code of
one.
Entry for a stacked channel recording request
from the channel check handler.
Entry for a stacked channel check recording
request from ERP.
Entry point to locate the starting page record
for recording.
Entry to clear and format the recording area on
disk.
Entry for machine check recording.
Entry for a stacked machine check request.
Entry for a stacked environmental recording
request.
Entry for a stacked outboard error recording
request.
Calls to initiate error recording via DMKIOF (no DMKIOE function performed).
Entry for a stacked erase request.
Processes a 3704/3705 and remote 3270 request.
Schedules recording for unit check, channel data
check, and hardware environmental counts.
Records 3330 data.
Schedules statistical data recording.
Schedules the update of a statistical data
request.
Processes an SVC 76 request.
Pageable.
Records system and I/O errors on the system disk
in predefined error recording cylinders.
Records channel check error from SIO in DMKIOS when cc=1.
Initializes pointers to available recording pages
at IPL and after an erase has been completed.
Records OBR and MDR records.
Records machine checks. Updates statistical data counters.
Records errors when requested by SVC 76. ______________---J 1-240 IBM VM/310 System Logic and Problem Determination--Volume 1