Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
IPLREC
Control Block Contents
IPLREC DSECT
Cross Reference (Contains links to field and bit definitions)
IPLREC Prolog
NAME : IPLREC DESCRIPTION: System Initialization (IPL) record DSECT : IPLREC FUNCTION : Maps the system initialization record created during IPL and collected by SVC 76 processing. LOCATED BY : N/A CREATED BY : HCPIPL DELETED BY : The EREP record recording process. RELOCATION CONSIDERATIONS : None
IPLREC Control Block Content
IPLREC DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure IPLREC System Initialization (IPL) record Type of record 0000 0 Bitstring 1 IPLKEY1 Class/Source(type of record) 00000050 IPLIND X'50' IPLIND IPL record System and Release level of issuing system. 0001 1 Bitstring 1 IPLKEY2 System/Release Level of issuing system 00000080 IPLMVS X'80' IPLMVS System is OS/VS2 or a later MVS system 00000060 IPLVM X'60' IPLVM System is CP67, VM/370 or a later VM system 00000040 IPLOSVS1 X'40' IPLOSVS1 System is OS/VS1 00000020 IPLDOS X'20' IPLDOS System is DOS (VSE) 00000000 IPLOS360 X'00' IPLOS360 System is OS/360 (X'00'-X'1F') Release level Miscellaneous switches. 0002 2 Bitstring 1 IPLSMS Record-independent switches 1... .... IPLMORE X'80' IPLMORE More records follow If this is the last record, this bit is zero. .1.. .... IPLWTOD X'40' IPLWTOD IBM System/370 time-of-day clock instruction issued. If this bit is zero, an IBM System/360 TOD clock instruction was issued. This is used in conjunction with IPLDATE and IPLTIME. ..1. .... IPLTRUNC X'20' IPLTRUNC Record truncated. ...1 .... IPLXA X'10' IPLXA 370-XA mode record. .... 1... IPLTMAC X'08' IPLTMAC TIME macro used (OS/VS) If zero, the time is in timer units (VSE). Operating system- and processor-specific information 0003 3 Bitstring 2 * Reserved. 0005 5 Bitstring 1 IPLINCRL Incremental release number of operating system 0006 6 Bitstring 2 * Reserved. 0008 8 Dbl-Word 8 IPLDT (0) System date and time when record was created. 0008 8 Signed 4 IPLDATE System date of failure. 000C 12 Signed 4 IPLTIME System time of failure 0010 16 Dbl-Word 8 IPLCPUID (0) CPU identification 0010 16 Bitstring 1 IPLVER Machine version code .... ...1 IPLVERII X'01' IPLVERII Version II CPUs. If this bit is zero, version I CPUs. 0011 17 Bitstring 3 IPLSER CPU serial number 0014 20 Bitstring 2 IPLMOD CPU machine model number 0016 22 Bitstring 2 IPLCEL Maximum length of machine- (CPU-) dependent machine-check extended logout area. Restart- and IPL-specific information 0018 24 Bitstring 1 IPLSYSID Device type or program that caused restart. 00000091 IPLPP X'91' IPLPP IBM Programming Products 00000090 IPLSCP X'90' IPLSCP IBM System Control Program 00000080 IPLGRAF X'80' IPLGRAF Graphics/Display/Audio 00000070 IPLTP X'70' IPLTP Teleprocessing 00000060 IPLOCR X'60' IPLOCR MICR/OCR 00000050 IPLUR X'50' IPLUR Card/Print 00000040 IPLTAPE X'40' IPLTAPE Tape 00000030 IPLOTHER X'30' IPLOTHER Other (All devices other than those included under other subsystem IDs 00000020 IPLDASD X'20' IPLDASD Direct Access (DASD) 00000010 IPLCPU X'10' IPLCPU Processor (CPU, channels, storage units, operator consoles) 00000000 IPLNULL X'00' IPLNULL Subsystem is unknown or subsystem code is not required by reason code. 0019 25 Bitstring 3 * Not used for IPL record. 001C 28 Character 2 IPLREAS Alphameric code representing the reason for IPL. Reason codes 0000D5D4 IPLNORM C'NM' Normal system initialization 0000C9C5 IPLNOCE C'IE' IBM hardware/programming problem. CE/PSR not reqd. 0000C9D4 IPLCEREQ C'IM' IBM hardware/programming problem. CE/PSR required. 0000D4C5 IPLMEDIA C'ME' IBM hardware unit failed because of faulty media. 0000E4D5 IPLUNKWN C'UN' Undetermined hardware or software failure. 0000D6D7 IPLOPER C'OP' Operator error or procedural problem. 0000E4D7 IPLUSER C'UP' A program other than an IBM- supplied SCP or PP failed and caused a restart. 0000C5D5 IPLENV C'EN' Environmental problem (power failure, air conditioning, etc.) 0000C3C5 IPLCEPSR C'CE' System restarted at CE/PSR request. 0000C4C6 IPLDFLT C'DF' Default 001E 30 Bitstring 2 IPLCHNM Channel map. 0020 32 Dbl-Word 8 IPLCHAN Channel type assignment at IPL. (Not used for 370-XA.) 0028 40 Signed 4 IPLHADDR Address of the last valid byte of storage found at IPL time (MVS only). 002C 44 Signed 4 IPLSDATE Time-stamp date (MVS only). 0030 48 Signed 4 IPLSTIME Time-stamp time (MVS only). Record size in bytes and doublewords. 00000034 IPLBLEN *-IPLREC IPLREC size in bytes 00000007 IPLSIZE (*-IPLREC+7)/8 IPLREC size in doublewords
IPLREC Storage Layout
*** IPLREC - System Initialization (IPL) record * * +------+------+------+-------------+------+-------------+ * 0 |:KEY1 |:KEY2 |IPLSMS|/////////////|:INCRL|/////////////| * +------+------+------+------+------+------+-------------+ * 8 | IPLDATE | IPLTIME | * +------+--------------------+-------------+-------------+ * 10 |IPLVER| IPLSER | IPLMOD | IPLCEL | * +------+--------------------+-------------+-------------+ * 18 |:SYSID|////////////////////| IPLREAS | IPLCHNM | * +------+--------------------+-------------+-------------+ * 20 | IPLCHAN | * +---------------------------+---------------------------+ * 28 | IPLHADDR | IPLSDATE | * +---------------------------+---------------------------+ * 30 | IPLSTIME | 34 * +---------------------------+ * *** IPLREC - System Initialization (IPL) record
IPLREC Cross Reference
Symbol Dspl Value -------------- ---- ----- IPLBLEN 0030 00000034 IPLCEL 0016 IPLCEPSR 001C 0000C3C5 IPLCEREQ 001C 0000C9D4 IPLCHAN 0020 IPLCHNM 001E IPLCPU 0018 00000010 IPLCPUID 0010 IPLDASD 0018 00000020 IPLDATE 0008 IPLDFLT 001C 0000C4C6 IPLDOS 0001 00000020 IPLDT 0008 IPLENV 001C 0000C5D5 IPLGRAF 0018 00000080 IPLHADDR 0028 IPLINCRL 0005 IPLIND 0000 00000050 IPLKEY1 0000 IPLKEY2 0001 IPLMEDIA 001C 0000D4C5 IPLMOD 0014 IPLMORE 0002 80 IPLMVS 0001 00000080 IPLNOCE 001C 0000C9C5 IPLNORM 001C 0000D5D4 IPLNULL 0018 00000000 IPLOCR 0018 00000060 IPLOPER 001C 0000D6D7 IPLOSVS1 0001 00000040 IPLOS360 0001 00000000 IPLOTHER 0018 00000030 IPLPP 0018 00000091 IPLREAS 001C IPLSCP 0018 00000090 IPLSDATE 002C IPLSER 0011 IPLSIZE 0030 00000007 IPLSMS 0002 IPLSTIME 0030 IPLSYSID 0018 IPLTAPE 0018 00000040 IPLTIME 000C IPLTMAC 0002 08 IPLTP 0018 00000070 IPLTRUNC 0002 20 IPLUNKWN 001C 0000E4D5 IPLUR 0018 00000050 IPLUSER 001C 0000E4D7 IPLVER 0010 IPLVERII 0010 01 IPLVM 0001 00000060 IPLWTOD 0002 40 IPLXA 0002 10
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