Use this command to change some of the system generation options that are
defined using SIP. Only the file copy of the SYSTC bits is
changed.
Requirements and Restrictions
You cannot use this command to alter the system generation options on a
loader general file.
Format
- NO
- turns the system generation options off.
- COMXT
- allows you to call the message router user exit (COBC).
- BPLOAD
- bypasses loading the core resident program area (CRPA) during restart
while the TPF system is cycling to 1052 state. Instead, the core
resident programs are loaded when they are called for the first time.
- Note:
- Programs allocated using the SALO PRELOAD parameter are loaded to the CRPA
regardless of the value specified for this parameter.
- DBRBUF
- allows you to write to buffered devices during database reorganization
(DBR). See the TPF Database Reference for
more information.
- DLOCK
- allows the TPF system to run record hold deadlock detection.
- DTAC
- includes detached data blocks in the online minidump.
- Note:
- The number of blocks included is defined by DETDATAX in the CZOCP
DSECT.
- KPFBK
- specifies keypoint fallback. See the RAM macro in TPF System Generation for more information.
- LTRCE
- specifies DASD lock tracing. Use this parameter for debugging
purposes only.
- SELACT
- enables or disables the E-type loader selective activate
function. When enabled, selected ECBs can enter the programs in a
selectively activated loadset. Otherwise, no ECBs can enter the
programs in a selectively activated loadset.
- TPFAR
- allows support for the TPF Application Requester (TPFAR) feature.
- UCS1
- allows you to call the communication source common user exit
(UCS1).
- VEQR
- specifies migration mode.
- WUNS
- causes the WTOPC message package to send unsolicited messages to remote
terminals. Otherwise, the WTOPC message package sends remote terminals
solicited messages.
Additional Information
- You can change only the system generation options listed in the syntax of
this command; other system generation options cannot be changed using
this command.
- Changes that are made using this command take effect the next time an
initial program load (IPL) is performed on the TPF system.
- You can change updatable subsystem-unique system generation bits from any
subsystem. Updatable system generation bits that are subsystem-shared
can be changed only from the basic subsystem (BSS).
- If an error occurs when you change one or more of the system generation
options, none of the options are changed.
Examples
System generation option values are changed in the following
example.
+--------------------------------------------------------------------------------+
|User: ZSYSG A NOVEQR |
| |
|System: SYSG0001I 13.43.41 FILE COPY OF SYSTEM GENERATION BITS UPDATED |
| AN IPL MUST BE DONE TO IMPLEMENT THE NEW SYSTEM GENERATION |
+--------------------------------------------------------------------------------+
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