<http://www.bitsavers.org/pdf/ibm/360/os> http://www.bitsavers.org/pdf/ibm/360/os (or preferably one of the mirrors listed at http:// <http://www.bitsavers.org> www.bitsavers.org ) then choose " <http://www.bitsavers.org/pdf/ibm/360/os/GC28-6628-9_OS_System_Ctl_Blks_R21. 7_Apr73.pdf> GC28-6628-9" Dave Wade G4UGM Illegitimi Non Carborundum
-----Original Message----- From: The IBM z/VM Operating System [mailto:[email protected]] On Behalf Of Jim Bohnsack Sent: 25 January 2009 02:26 To: [email protected] Subject: Re: DASD VOL1 doc I used to have a 30 year old ?? OS manual that described the IBM format 1-5 DSCB fields. Don't know where I put it. Maybe it's with a S/360 Green Card or an old PofOPs manual. I found this when I did a search on IBM for VTOC. http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML it says: IBM Systems <http://www.ibm.com/systems/> > System z <http://www.ibm.com/systems/z/> > z/VM <http://www.vm.ibm.com/> > Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM. FMLRC Prolog <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#PLOG> Control Block <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#READ> Contents FMLRC DSECT <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#FMLRC> Storage Layout <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#BMAP> Cross <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#XREF> Reference FMLRC Prolog NAME : HCPFMLRC DESCRIPTION: VOLUME LABEL RECORD DSECT : FMLRC FUNCTION : MAPS THE VOLUME LABEL RECORD THAT IS READ FROM/WRITTEN TO CYLINDER 0, TRACK 0, RECORD 3. LOCATED BY : FMNFAWLR - FIELD IN HCPFMNUC CREATED BY : HCPADF (INDIRECTLY) BY USING THE FIRST LEVEL ASA TO IMBED HCPFAW INTO THE GUEST VIRTUAL STORAGE. HCPCCF (CMS MODULE). HCPFAW IS INCLUDED IN THE CPFMTXA MODULE. DELETED BY : VIRTUAL SYSTEM CLEAR. _____ FMLRC Control Block Content FMLRC DSECT Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure FMLRC VOLUME LABEL RECORD VOLUME LABEL RECORD - RECORD 3 ON CYLINDER 0, TRACK 0 0000 0 Character 4 FMLOSLAB OS LABEL 0004 4 Character 6 FMLCPLAB CP LABEL (ALSO KNOWN AS THE VOLID OR VOLUME IDENTIFIER) 000A 10 Bitstring 1 * CHARACTER ZERO 000B 11 Bitstring 4 FMLVTCB VTOC PTR IN R3 (CCHH) 000F 15 Bitstring 1 FMLVTCR ... (R) 0010 16 Bitstring 5 * ZEROS 0015 21 Bitstring 1 * (20) BLANKS 0029 41 Bitstring 5 * FILLER 002E 46 Character 5 FMLVLOWN VOLUME OWNER - THIS FIELD WILL CONTAIN THE CHARACTERS 'CPVOL' IF CYLINDER ZERO HAS BEEN FORMATTED FOR VM/XA CP USE. 0033 51 Bitstring 29 * _____ FMLRC Storage Layout *** FMLRC - VOLUME LABEL RECORD * * +---------------------------+---------------------------+ * 0 | FMLOSLAB | FMLCPLAB- | * +-------------+------+------+--------------------+------+ * 8 | -(004) |//////| FMLVTCB |:VTCR | * +-------------+------+-------------+-------------+------+ * 10 |//////////////////////////////////|////////////////////| * +----------------------------------+////////////////////| * 18 |///////////////////////////////////////////////////////| * =///////////////////////////////////////////////////////= * |//////+----------------------------------+-------------+ * 28 |//////|//////////////////////////////////| (02E)- | * +------+-------------+--------------------+-------------+ * 30 | -FMLVLOWN |//////////////////////////////////| * +--------------------+//////////////////////////////////| * 38 |///////////////////////////////////////////////////////| * =///////////////////////////////////////////////////////= * |///////////////////////////////////////////////////////| * +-------------------------------------------------------+ * 50 * *** FMLRC - VOLUME LABEL RECORD _____ FMLRC Cross Reference Symbol Dspl Value -------------- ---- ----- FMLCPLAB <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#0002> 0004 FMLOSLAB <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#0001> 0000 FMLVLOWN <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#0009> 002E FMLVTCB <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#0004> 000B FMLVTCR <http://www.vm.ibm.com/pubs/cp31064/FMLRC.HTML#0005> 000F _____ This information is based on z/VM V3R1.0. Last updated on 29 Mar 2001 at 15:44:46 EDT. Copyright IBM Corporation, 1990, 2001 Tony Thigpen wrote: Anybody know where in the VM manuals the layout of the VOL1 label is documented? -- Jim Bohnsack Cornell University (972) 596-6377 home/office (972) 342-5823 cell [email protected]
