Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM. |
OPCTB
Control Block Contents
OPCTB DSECT
Cross Reference (Contains links to field and bit definitions)
OPCTB Prolog
NAME : HCPOPCTB DESCRIPTION: OPERATOR CONSOLE DEVICE NUMBER TABLE DSECT : OPCTB FUNCTION : CONTAINS THE DEVICE NUMBERS OF THE OPERATORS PRIMARY AND ALTERNATE CONSOLES. LOCATED BY : SYSRIOPC is the pointer to the list of potential devices to become the operator's console SYSRIOPC ---> +-------+ | devno | primary console +-------+ | devno | alternate console +-------+ | devno | alternate console +-------+ | . | | . | | . | +-------+ |FFFFFFF| end of table +-------+ CREATED BY : OPCTB is initially part of the system nucleus created by the sysgen process. During system initialization, a new OPCTB may be created in gotten storage. DELETED BY : OPCTB IS PART OF THE SYSTEM NUCLEUS AND NEVER DELETED.
OPCTB Control Block Content
OPCTB DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure OPCTB OPERATOR CONSOLE DEVICE NUMBER TABLE THE FIRST ENTRY IS THE PRIMARY OPERATOR'S CONSOLE, EACH SUCCESSIVE ENTRY IS FOR AN ALTERNATE CONSOLE, THE END OF THE TABLE IS INDICATED BY X'FFFFFFFF'. 0000 0 Signed 4 OPCDEVNO Device number of the terminal to become one of the consoles 0004 4 Bitstring 1 OPCFLAG Device flags 1... .... OPCIC X'80' Integrated console indicator 00000005 OPCLEN *-OPCTB Length of one entry 00000005 OPCNEXT * Next device number in list
OPCTB Storage Layout
*** OPCTB - OPERATOR CONSOLE DEVICE NUMBER TABLE * * +---------------------------+------+ * 0 | OPCDEVNO |:FLAG | 5 * +---------------------------+------+ * *** OPCTB - OPERATOR CONSOLE DEVICE NUMBER TABLE
OPCTB Cross Reference
Symbol Dspl Value -------------- ---- ----- OPCDEVNO 0000 OPCFLAG 0004 OPCIC 0004 80 OPCLEN 0004 00000005 OPCNEXT 0004 00000005
Last updated on 5 Jun 2001 at 16:02:31 EDT.
Copyright IBM Corporation, 1990, 2001