Re: LAE instruction
I think you meant SSAR. This requires another set of setups. To SSAR to other than yourself, you need to be AX authorized. -Original Message- From: Micheal Butz michealb...@optonline.net To: IBM-MAIN IBM-MAIN@bama.ua.edu Sent: Wed, Mar 7, 2012 7:52 am Subject: Re: LAE instruction You are right about LAE vs L. As far as being on my dual/pasn list f Saar then load Arx with 1 will go to secondary with out being on my list ent from my iPhone On Mar 6, 2012, at 9:52 PM, Ngafei Huang dailom...@aol.com wrote: Chaining these control blocks requires supporting environment and setups as ollow: AR register basing ASNALET needs to be setup. AR register basing ASXBFTCB needs to be setup. Instead of LAE R4,TCBRBP, it should be L R4,TCBRBP. Target address space needs to be on your access-list. Target address space must be non-swappable. Raymond Wong -Original Message- From: Micheal Butz michealb...@optonline.net To: IBM-MAIN IBM-MAIN@bama.ua.edu Sent: Tue, Mar 6, 2012 8:30 pm Subject: Re: LAE instruction Or a more practical use of LAE s chaing thru control blocks from another address space AC. 512 AM R3,R3,ASNALET . R3,ASXBFTCB SING TCB,R3 AE. R4,TCBRBP SING R4,RB ent from my iPhone On Mar 6, 2012, at 5:53 PM, Rob Scott rsc...@rocketsoftware.com wrote: Micheal, Putting a bit of meat on the bones to create an example piece of code with omments and notes : (o) We are going to process a linked list of FOO elements in a dataspace and alculate some random hash value based on a subset of bytes in the FOO_NAME ield. (o) This code has been just typed into my e-mail - they may be typos/errors (o) WA is the working storage structure/DSECT DO, ALESERV ADD,STOKEN=WA_FOO_STOKEN, Add dataspace containing linked list f FOOs ALET=WA_FOO_ALET, AL=WORKUNIT, MF=(E,WA_ALESERV_LIST) DOEXIT (LTR,R15,R15,NZ)Failed - quick exit SAC512AR-Mode (1) SYSSTATE ASCENV=ARInform assembler of AR-mode LR6,WA_FOO_HEADGet head of list LAMAR6,AR6,WA_FOO_ALETGet dataspace ALET (2) USING FOO,R6 DO UNTIL=(ICM,R6,B'',FOO_NEXT,Z)Traverse list (3) LAER7,FOO_NAMEPoint to FOO_NAME (4) LAER1,8(,R7)Use R1 for temp pointer (5) XCWA_HASH,WA_HASHZero hash value DO FROM=(R14,=AL4(L'FOO_NAME-8)) XRR0,R0 ICR0,0(,R1)Get 1-byte (6) ALR0,WA_HASHAdd to hash value STR0,WA_HASHStore new value LAER1,1(,R1)Next byte of name (6) ENDDO NCWA_HASH,=X'00FF'0-255 range for hash ENDDO SAC0Inform assembler (7) SYSSTATE ASCENV=P ENDDO(8) rest of code (9) Notes : (1) I think it is always worth having a macro to do both the SAC and the YSSTATE for you in one hit (not shown)- stops you forgetting the SYSSTATE and hat can confuse any macros that follow. (2) Loading the ALET in to the AR for the first time - R6 will be able to ddress data in the dataspace (3) AR-mode makes traversing data structures in dataspaces easy as you can ust use normal instructions (if you play by the rules) (4) Because LAE used and FOO dsect covers R6+AR6 - AR7 will contain ALET for ataspace after instruction executed (5) This time we are using R1 to point at 8 bytes into FOO_NAME (for whatever eason) - note that AR1 will get the dataspace ALET (6) Loading and using a byte from the dataspace (7) See (1) (8) Assuming all ARs are zero before we start, if the code goes thru uccessfully, then AR1, AR6 and AR7 will contain the ALET of the dataspace here you may wish to consider zeroing the ARs at this point if they are no longer eeded. (9) Prudent use of LAM AR14,AR1,=4A(0) will protect you from unintentional R values in working regs after calling certain system services - you can ever be sure how in-house macros expand. Hope this helps Rob Scott Lead Developer Rocket Software 275 Grove Street * Newton, MA 02466-2272 * USA Tel: +1.781.684.2305 Email: rsc...@rs.com Web: www.rocketsoftware.com -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of icheal Butz Sent: 06 March 2012 21:53 To: IBM-MAIN@bama.ua.edu Subject: Re: LAE instruction So SAC 512 LAE R3,0(,R4) R3 is CPYA from access R4 right -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of cKown, John Sent: Tuesday, March 06, 2012 4:22 PM To: IBM-MAIN@bama.ua.edu Subject: Re: LAE instruction Yes, from the LAE instruction text
Re: LAE instruction
You are not kidding. Raymond Wong -Original Message- From: Edward Jaffe edja...@phoenixsoftware.com To: IBM-MAIN IBM-MAIN@bama.ua.edu Sent: Wed, Mar 7, 2012 10:07 am Subject: Re: LAE instruction On 3/7/2012 6:34 AM, Ngafei Huang wrote: I think you meant SSAR. This requires another set of setups. To SSAR to other han yourself, you need to be AX authorized. Thankfully, SSAR doesn't work with reusable ASIDs. Best to avoid it completely. -- dward E Jaffe hoenix Software International, Inc 31 Parkview Drive North l Segundo, CA 90245 10-338-0400 x318 dja...@phoenixsoftware.com ttp://www.phoenixsoftware.com/ -- or IBM-MAIN subscribe / signoff / archive access instructions, end email to lists...@bama.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: LAE instruction
Chaining these control blocks requires supporting environment and setups as follow: AR register basing ASNALET needs to be setup. AR register basing ASXBFTCB needs to be setup. Instead of LAE R4,TCBRBP, it should be L R4,TCBRBP. Target address space needs to be on your access-list. Target address space must be non-swappable. Raymond Wong -Original Message- From: Micheal Butz michealb...@optonline.net To: IBM-MAIN IBM-MAIN@bama.ua.edu Sent: Tue, Mar 6, 2012 8:30 pm Subject: Re: LAE instruction Or a more practical use of LAE s chaing thru control blocks from another address space AC. 512 AM R3,R3,ASNALET . R3,ASXBFTCB SING TCB,R3 AE. R4,TCBRBP SING R4,RB ent from my iPhone On Mar 6, 2012, at 5:53 PM, Rob Scott rsc...@rocketsoftware.com wrote: Micheal, Putting a bit of meat on the bones to create an example piece of code with omments and notes : (o) We are going to process a linked list of FOO elements in a dataspace and alculate some random hash value based on a subset of bytes in the FOO_NAME ield. (o) This code has been just typed into my e-mail - they may be typos/errors (o) WA is the working storage structure/DSECT DO, ALESERV ADD,STOKEN=WA_FOO_STOKEN, Add dataspace containing linked list f FOOs ALET=WA_FOO_ALET, AL=WORKUNIT, MF=(E,WA_ALESERV_LIST) DOEXIT (LTR,R15,R15,NZ)Failed - quick exit SAC512AR-Mode (1) SYSSTATE ASCENV=ARInform assembler of AR-mode LR6,WA_FOO_HEADGet head of list LAMAR6,AR6,WA_FOO_ALETGet dataspace ALET (2) USING FOO,R6 DO UNTIL=(ICM,R6,B'',FOO_NEXT,Z)Traverse list (3) LAER7,FOO_NAMEPoint to FOO_NAME (4) LAER1,8(,R7)Use R1 for temp pointer (5) XCWA_HASH,WA_HASHZero hash value DO FROM=(R14,=AL4(L'FOO_NAME-8)) XRR0,R0 ICR0,0(,R1)Get 1-byte (6) ALR0,WA_HASHAdd to hash value STR0,WA_HASHStore new value LAER1,1(,R1)Next byte of name (6) ENDDO NCWA_HASH,=X'00FF'0-255 range for hash ENDDO SAC0Inform assembler (7) SYSSTATE ASCENV=P ENDDO(8) rest of code (9) Notes : (1) I think it is always worth having a macro to do both the SAC and the YSSTATE for you in one hit (not shown)- stops you forgetting the SYSSTATE and hat can confuse any macros that follow. (2) Loading the ALET in to the AR for the first time - R6 will be able to ddress data in the dataspace (3) AR-mode makes traversing data structures in dataspaces easy as you can ust use normal instructions (if you play by the rules) (4) Because LAE used and FOO dsect covers R6+AR6 - AR7 will contain ALET for ataspace after instruction executed (5) This time we are using R1 to point at 8 bytes into FOO_NAME (for whatever eason) - note that AR1 will get the dataspace ALET (6) Loading and using a byte from the dataspace (7) See (1) (8) Assuming all ARs are zero before we start, if the code goes thru uccessfully, then AR1, AR6 and AR7 will contain the ALET of the dataspace here you may wish to consider zeroing the ARs at this point if they are no longer eeded. (9) Prudent use of LAM AR14,AR1,=4A(0) will protect you from unintentional R values in working regs after calling certain system services - you can ever be sure how in-house macros expand. Hope this helps Rob Scott Lead Developer Rocket Software 275 Grove Street * Newton, MA 02466-2272 * USA Tel: +1.781.684.2305 Email: rsc...@rs.com Web: www.rocketsoftware.com -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of icheal Butz Sent: 06 March 2012 21:53 To: IBM-MAIN@bama.ua.edu Subject: Re: LAE instruction So SAC 512 LAE R3,0(,R4) R3 is CPYA from access R4 right -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of cKown, John Sent: Tuesday, March 06, 2012 4:22 PM To: IBM-MAIN@bama.ua.edu Subject: Re: LAE instruction Yes, from the LAE instruction text: quote The address specified by the X2, B2, and D2 fields is placed in general egister R1. Access register R1 is loaded with a value that depends on the urrent value of the address-space-control bits, bits 16 and 17 of the PSW. If the address-space-control bits are 01 binary, the value placed in the access register also depends on whether the 2 field is zero or non- zero. ... PSW Bits 16 and 17 Value Placed in Access Register R1 00 hex (zeros in bit positions 0-31) 10 0001 hex (zeros in bit positions 0-30 and one in bit position
Re: S402 ABEND upon cross-memory POST
-Original Message- From: Justin R. Bendich jbend...@austin.rr.com To: IBM-MAIN IBM-MAIN@bama.ua.edu Sent: Mon, Dec 12, 2011 12:31 pm Subject: S402 ABEND upon cross-memory POST I am attempting a cross-memory POST and receiving a S402 ABEND, RSN=0. ere is the environment: The code is running in key zero, AMODE 31, ASC=PRIMARY, PASN=HASN=SASN . It is running out of a FRR for a SRB. The macro invocation is specified as follows: POST THE_ECB,0,ASCB=(2),ERRET=LBL1,ECBKEY=7,LINKAGE=SYSTEM,MF=(E,PL_LIST) R2 addresses the correct ASCB. The ECB resides in CSA. The key of the ECB is, indeed, 7. The code at LBL1 (the ERRET) is XL2'07FE' (BR R14). The parameter list ends up looking like: X'00'(R1): ecb address X'04'(R1): ASCB address X'08'(R1): ERRET address X'0C'(R1): A(X'7000') There does not appear to be anything wrong with it. There is a task whose PSW key is zero which has issued n EVENTS macro whose table includes the ECB in question. The home address space of that task is described by the assed ASCB. The table for the EVENTS macro is in key-8 storage. Thank you for any information you might be able to provide, Justin R. Bendich -- or IBM-MAIN subscribe / signoff / archive access instructions, end email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO earch the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: S402 ABEND upon cross-memory POST
Can you clarify what you mean by There is a task whose PSW key is zero which has issued an EVENTS macro whose table includes the ECB in question. Because as far as I know EVENT table does not own ECBs. It is the ECBs that reference the event table. Raymond Wong -Original Message- From: Justin R. Bendich jbend...@austin.rr.com To: IBM-MAIN IBM-MAIN@bama.ua.edu Sent: Mon, Dec 12, 2011 12:31 pm Subject: S402 ABEND upon cross-memory POST I am attempting a cross-memory POST and receiving a S402 ABEND, RSN=0. ere is the environment: The code is running in key zero, AMODE 31, ASC=PRIMARY, PASN=HASN=SASN . It is running out of a FRR for a SRB. The macro invocation is specified as follows: POST THE_ECB,0,ASCB=(2),ERRET=LBL1,ECBKEY=7,LINKAGE=SYSTEM,MF=(E,PL_LIST) R2 addresses the correct ASCB. The ECB resides in CSA. The key of the ECB is, indeed, 7. The code at LBL1 (the ERRET) is XL2'07FE' (BR R14). The parameter list ends up looking like: X'00'(R1): ecb address X'04'(R1): ASCB address X'08'(R1): ERRET address X'0C'(R1): A(X'7000') There does not appear to be anything wrong with it. There is a task whose PSW key is zero which has issued n EVENTS macro whose table includes the ECB in question. The home address space of that task is described by the assed ASCB. The table for the EVENTS macro is in key-8 storage. Thank you for any information you might be able to provide, Justin R. Bendich -- or IBM-MAIN subscribe / signoff / archive access instructions, end email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO earch the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Opening a Spanned File for Input Using Assembler
Maybe you want to give amode 24 a try. -Original Message- From: Bruce Hunt bruce.h...@trs.state.tx.us To: IBM-MAIN@bama.ua.edu Sent: Tue, Mar 8, 2011 10:43 am Subject: Opening a Spanned File for Input Using Assembler I an trying to read a spanned file that has a record organzation of PS, a record format of VBS, a record length of 1, a blocksize of 27998 as per the file ttributes, and a possible real record length of 65535. But in trying to open ne file I get a SOC4. I am not the greatest Assembler coder but my program s pretty simple. I know it is abending on the open. Anyone have any ideas. My ctual input records in the spanned file are header records that are 76 bytes, ata records that are 136 bytes, and trailer records that are 28 bytes. Any elp will be greatly appreciated. TITLE 'XP1000' 02/25/11 B HUNT CHANGED A SPANNED FILE TO A FIXED FILE P1000 AMODE 31 P1000 RMODE ANY P1000 START COPY EQUATES SAVE (14,12) SAVE REGISTERS 14 THRU 12 BASR BASE1,0 ESTABLISH ADDRESSABILITY USING *,BASE1 PROVIDE BASE ID WTO ' START XP1000',X ROUTCDE=(2),X DESC=(7) B BEGIN SPACE 1 DS0D DCCL8'XP1000' DCCL8'SYSDATE' DCCL8'SYSTIME' SPACE 1 EGINDS0H WTO ' BEFORE OPEN',ROUTCDE=(2),DESC=(7) OPEN (INFILE,INPUT,OUTFILE,OUTPUT) LTR 15,15 BNZ BADOPEN WTO ' GOOD OPEN FILE',ROUTCDE=(2),DESC=(7) OOP DS 0H GET INFILE,INREC WTO ' GOOD FILE READ',ROUTCDE=(2),DESC=(7) MVC BATA,DATA WTO ' GOOD MOVE',ROUTCDE=(2),DESC=(7) PUT OUTFILE,OUTREC WTO ' GOOD FILE WRITE',ROUTCDE=(2),DESC=(7) B LOOP INAL DS 0H WTO ' BEFORE FILE CLOSE',ROUTCDE=(2),DESC=(7) CLOSE (INFILE,,OUTFILE) WTO ' GOOD FILE CLOSE',ROUTCDE=(2),DESC=(7) B C100 ADOPEN WTO ' UABLE TO OPEN FILE',ROUTCDE=(2),DESC=(7) B C100 ADREAD WTO ' READ UNSUCCESSFUL ',ROUTCDE=(2),DESC=(7) B C100 ADWRITE WTO ' WRITE UNSUCCESSFUL ',ROUTCDE=(2),DESC=(7) B C100 100 DS0H RETURN (14,12)RESTORE REGISTERS AND RETURN NFILE DCB DSORG=PS,RECFM=VBS,MACRF=GM,+ DDNAME=INDD,EODAD=FINAL UTFILE DCB SORG=PS,RECFM=FB,LRECL=28,BLKSIZE=2800,MACRF=PM, + DDNAME=OUTDD UTREC DS0CL28 ATA DSCL28 AVEAREA DS18F LTORG NRECDS0F ATA DSCL28 DSCL32000 DSCL32000 DSCL32000 END XP1000
Re: Opening a Spanned File for Input Using Assembler
Does the load module linked with RM 24? Maybe it should be. -Original Message- From: Hunt, Bruce bruce.h...@trs.state.tx.us To: IBM-MAIN@bama.ua.edu Sent: Tue, Mar 8, 2011 2:08 pm Subject: Re: Opening a Spanned File for Input Using Assembler I tried BFTEK=A and DCB=BFTEK=A on my input file JCL and still got soc4's but hanks. -Original Message- rom: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of ick Fochtman ent: Tuesday, March 08, 2011 12:01 PM o: IBM-MAIN@bama.ua.edu ubject: Re: Opening a Spanned File for Input Using Assembler Adding the parameter BFTEK=A will cause the spanned records to be e-assembled during input processing, before they are handed to the pplication. Rick - ruce Hunt wrote: I an trying to read a spanned file that has a record organzation of PS, a ecord format of VBS, a record length of 1, a blocksize of 27998 as per the file attributes, and a possible real record length of 65535. But in trying to open tne file I get a SOC4. I am not the greatest Assembler coder but my program is pretty simple. I know it is abending on the open. Anyone have any ideas. My actual input records in the spanned file are header records that are 76 bytes, data records that are 136 bytes, and trailer records that are 28 bytes. Any help will be greatly appreciated. TITLE 'XP1000' * * 02/25/11 B HUNT CHANGED A SPANNED FILE TO A FIXED FILE * XP1000 AMODE 31 XP1000 RMODE ANY XP1000 START COPY EQUATES SAVE (14,12) SAVE REGISTERS 14 THRU 12 BASR BASE1,0 ESTABLISH ADDRESSABILITY USING *,BASE1 PROVIDE BASE ID WTO ' START XP1000',X ROUTCDE=(2),X DESC=(7) B BEGIN SPACE 1 DS0D DCCL8'XP1000' DCCL8'SYSDATE' DCCL8'SYSTIME' SPACE 1 BEGINDS0H WTO ' BEFORE OPEN',ROUTCDE=(2),DESC=(7) OPEN (INFILE,INPUT,OUTFILE,OUTPUT) LTR 15,15 BNZ BADOPEN WTO ' GOOD OPEN FILE',ROUTCDE=(2),DESC=(7) LOOP DS 0H GET INFILE,INREC WTO ' GOOD FILE READ',ROUTCDE=(2),DESC=(7) MVC BATA,DATA WTO ' GOOD MOVE',ROUTCDE=(2),DESC=(7) PUT OUTFILE,OUTREC WTO ' GOOD FILE WRITE',ROUTCDE=(2),DESC=(7) B LOOP FINAL DS 0H WTO ' BEFORE FILE CLOSE',ROUTCDE=(2),DESC=(7) CLOSE (INFILE,,OUTFILE) WTO ' GOOD FILE CLOSE',ROUTCDE=(2),DESC=(7) B C100 BADOPEN WTO ' UABLE TO OPEN FILE',ROUTCDE=(2),DESC=(7) B C100 BADREAD WTO ' READ UNSUCCESSFUL ',ROUTCDE=(2),DESC=(7) B C100 BADWRITE WTO ' WRITE UNSUCCESSFUL ',ROUTCDE=(2),DESC=(7) B C100 C100 DS0H RETURN (14,12)RESTORE REGISTERS AND RETURN INFILE DCB DSORG=PS,RECFM=VBS,MACRF=GM,+ DDNAME=INDD,EODAD=FINAL OUTFILE DCB DSORG=PS,RECFM=FB,LRECL=28,BLKSIZE=2800,MACRF=PM, + DDNAME=OUTDD
Re: PSATOLD = 0 when under PRB !?!?
Such a suggestion. VTAM exits can also run under SRB. How about make sure that is not the case. Raymond Wong -Original Message- From: Thompson, Steve steve_thomp...@stercomm.com To: IBM-MAIN@bama.ua.edu Sent: Wed, Dec 16, 2009 11:26 am Subject: Re: PSATOLD = 0 when under PRB !?!? -Original Message- rom: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On ehalf Of Edward Jaffe ent: Wednesday, December 16, 2009 11:08 AM o: IBM-MAIN@bama.ua.edu ubject: Re: PSATOLD = 0 when under PRB !?!? Thompson, Steve wrote: So the question that I have is, under what conditions can PSATOLD be zero? From days gone by, this would seem to be some kind of ispatching bug if this is not set prior to dispatching a program that is PRB ased. Our code uses PSATOLD=0 as a way to check whether we're in SRB mode. SNIP We have NO SRB code in this case. NONE, NADA, ZILCH. But the code path taken is only done with PSATOLD = zero. There are two of us here who say this is impossible (I'm one). But here e are, and we have seen this at 1.7, 1.9, and 1.10 (that I know about). nd it is only here and there. So there must be some other way for PSATOLD to be zero. And that's all 'm asking: SRB does it, what else does it? Do IRBs? Because we do use RBs from time to time (we do use VTAM). Regards, teve Thompson -- or IBM-MAIN subscribe / signoff / archive access instructions, end email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO earch the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: ERRET completion code for asynch cross mem POST
Authorized Assembler Services References, volume 3, SA22-7611 -Original Message- From: Jim Whitehurst j...@jimwhitehurst.com To: IBM-MAIN@bama.ua.edu Sent: Thu, 22 Jan 2009 11:01 am Subject: ERRET completion code for asynch cross mem POST Can anyone point me to documention on interpreting the contents of Reg 3 on entry to an ERRET routine from the POST macro? Thanks Jim Whitehurst -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Basic Cross Memory questions
If you absolutely need to run with EAX in your PC routine, I think in your case you may want to just set the AX to 1 for your PC routine provider space (as the way it is now).? And for the PCRTN EAX, reserve a different AX for it.? But for the EAX to work, you need to go through the necessary setup, e.g, again, ATSET. Raymond Wong Boston,? MA -Original Message- From: Binyamin Dissen [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Tue, 18 Dec 2007 2:24 am Subject: Re: Basic Cross Memory questions On Mon, 17 Dec 2007 21:59:21 -0800 Henry Willard [EMAIL PROTECTED] wrote: :Logan, David wrote: : Even with my AXSET, I still get a S052/319 ABEND at the ETCRE macro. I : have no idea why. My code looks right based on what I think I know. What : am I doing wrong? : MODESET MODE=SUP,KEY=ZERO : GETAXDS0H : LA6,1 : AXSET AX=(6) : MVC LXCOUNT,=F'1' : GETLXWTO 'BEFORE LXRES' : XETLXLXRES LXLIST=LXL,SYSTEM=YES : WTO 'AFTER LXRES' : L 5,PCRTNADR : ETDEF TYPE=SET,ETEADR=ETD1,ROUTINE=(5),EAX=(6),AKM=(0:15),X :SSWITCH=YES,STATE=SUPERVISOR,EKM=(0:15),PKM=OR, X :ASCMODE=AR : WTO 'AFTER ETDEF'-- Last WTO to be written : CET1 ETCRE ENTRIES=ETDESC : WTO 'AFTER ETCRE' : ST 0,TKVALUE : MODESET MODE=PROB,KEY=NZERO : EDCEPIL :Get rid of the EAX altogether. Ditto. You will be running with AX=1 in the PC routine. Also, you will need an ETCON. -- Binyamin Dissen [EMAIL PROTECTED] http://www.dissensoftware.com Director, Dissen Software, Bar Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Basic Cross Memory questions
Correct me if I am wrong on this.? I think system LX or non, if you have a SSWITCH=YES requirement, i.e., use private instead of common, you must have the AX ATSET to the client space. Of course unless you're talking AX=1 Raymond Wong -Original Message- From: Logan, David [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Mon, 17 Dec 2007 8:10 am Subject: Re: Basic Cross Memory questions SSWITCH=NO means you put your system LX PC routine into common storage? LPA or LOAD GLOBAL=YES? Having the system LX validate the client and set up the non-system LX makes sense. You also implied the answer to my question about not having an AXRES/ATSET for a system LX. David Logan -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Rob Scott Sent: Monday, December 17, 2007 7:02 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Basic Cross Memory questions David, Believe me this is possible as I use it for my products : (o) APF-auth server code issues LXRES, ETDEF, ETCRE and ETCON for a System-LX (o) APF-auth server code also builds one or more non-system LXs for other PC routines (o) The system-LX PC routine's only function is to validate client authority to the product (RACROUTE) and connect/disconnect the client (ATSET and ETCON/ETDIS) to the non-system LX (the code that is the meat of the product). Here is the definition for the system-LX : ETDEF TYPE=SET,ETEADR=ETTBSYS1, ROUTINE=(R7), ARR=(R9), PC=STACKING, ASCMODE=PRIMARY, SSWITCH=NO, SASN=OLD, STATE=SUPERVISOR, RAMODE=31, AKM=(0:15), EK=(0) ETCRE ENTRIES=ETTBSYSCreate the Entry Table STCM R0,B'',TKVALUE MVC TKCOUNT,=F'1' Set # ET tokens ETCON LXLIST=LXL,Connect LX to Entry Table TKLIST=TKL, MF=(E,ETCONL) Rob Scott Rocket Software, Inc 275 Grove Street Newton, MA 02466 617-614-2305 [EMAIL PROTECTED] -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Logan, David Sent: 17 December 2007 13:19 To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Basic Cross Memory questions I believe I understand the ETDEF options. Took me a bit, because the authorization and execution key parameters are a bit complicated. But this fact remains: The client only needs to issue an ATSET, which does require authorization. -- and as long as this is true, I need an SVC, since this seems to be the best way to get my client connected to my server. If there is a better way than an SVC, I would love to hear about it. Also, this means that there is no reason whatsoever to use a system LX, since I need to be in supervisor state anyway for the ATSET. I might as well go ahead after that and connect my LX/entry table at the same time. There is no way to get around the supervisor state requirement for client (i.e. problem program) setup. David Logan -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Binyamin Dissen Sent: Monday, December 17, 2007 6:10 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Basic Cross Memory questions On Mon, 17 Dec 2007 07:51:56 -0500 Logan, David [EMAIL PROTECTED] wrote: :Apologies, you are right...I was writing from memory, and :mis-remembered. The client needs an AXSET and an ETCON. The only way to :issues AXSET and ETCON seems to be in supervisor state. The only way for :a problem program to gain access to supervisor state code seems to be :via an SVC. The client only needs to issue an ATSET, which does require authorization. :I tried using a system LX, and removed the above setup. I get a S0C2 in :the client. This indicates to me that even WITH a system LX, I still :need an SVC to issue the ATSET and the ETCON. Depends on how you define the PC. It can be defined as requiring supervisor state/system key, or acceptable in problem state. It can be defined as switching to supervisor state, or staying in problem state. Look carefully at the ETDEF operands. -- Binyamin Dissen [EMAIL PROTECTED] http://www.dissensoftware.com Director, Dissen Software, Bar Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html NOTICE: This E-mail may contain confidential information. If you are not the addressee or the intended recipient please do not read this E-mail and please immediately delete this e-mail message and any attachments from your workstation or network mail system. If you are the addressee or the intended recipient and you save or print a copy of
Re: TPROT condition code
Can happen when the page has been paged out or?the page is not accessible or simply means no such page. Raymond Wong -Original Message- From: Miklos Szigetvari [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Thu, 13 Dec 2007 10:37 am Subject: TPROT condition code Hi? ? ? A question about the TPROT condition code 3, translation not available:? Can happen if the referenced address paged out, or it is already an error condition ?? ? -- Miklos Szigetvari? ? Development Team? ISIS Information Systems Gmbh tel: (+43) 2236 27551 570? Fax: (+43) 2236 21081 ? E-mail: [EMAIL PROTECTED] ? Info: [EMAIL PROTECTED] Hotline: +43-2236-27551-111 ? Visit our Website: http://www.isis-papyrus.com ---? This e-mail is only intended for the recipient and not legally? binding. Unauthorised use, publication, reproduction or? disclosure of the content of this e-mail is not permitted.? This email has been checked for known viruses, but ISIS accepts? no responsibility for malicious or inappropriate content.? --- ? --? For IBM-MAIN subscribe / signoff / archive access instructions,? send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO? Search the archives at http://bama.ua.edu/archives/ibm-main.html? More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: TPROT condition code
Getmained storage can be paged out and?TPROT can get cc 3 because of it.? -Original Message- From: Michael Poil [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Thu, 13 Dec 2007 11:26 am Subject: Re: TPROT condition code Can happen when the page has been paged out or?the page is not accessible or simply means no such page. Not due to a normal page fault. This is fixed up by z/OS under the covers after it gets the program check 11. Referencing an invalid page in the Address Space (i..e not getmained) will give you a S0C4. -- Mike Poil Java z/OS Level 3 Service IBM United Kingdom Limited, Hursley Park, Winchester SO21 2JN Internal: 246824 External: +44 (0)1962 816824 Java debugging: http://www.ibm.com/developerworks/java/jdk/diagnosis/ -- Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: TPROT condition code
I would??TPROT first and only if cc 3 before issuing VSMLOC to save a few cycles. Raymond Wong -Original Message- From: Wayne Driscoll [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Thu, 13 Dec 2007 11:53 am Subject: Re: TPROT condition code Yes, getmained storage can be paged out, unless it is in a page fixed subpool, or has been page fixed by the application. As for TPROT, it doesn't really help to determine if a page is valid, just if it is paged in. A cc=3 could be that a page fault will occur OR the page is invalid, so you still need to deal with a possible S0C4. If you are attempting to determine if a piece of storage is valid, use VSMLOC. Wayne Driscoll Product Developer JME Software LLC NOTE: All opinions are strictly my own. -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ngafei Huang Sent: Thursday, December 13, 2007 11:42 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: TPROT condition code Getmained storage can be paged out and?TPROT can get cc 3 because of it.? -Original Message- From: Michael Poil [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Thu, 13 Dec 2007 11:26 am Subject: Re: TPROT condition code Can happen when the page has been paged out or?the page is not accessible or simply means no such page. Not due to a normal page fault. This is fixed up by z/OS under the covers after it gets the program check 11. Referencing an invalid page in the Address Space (i..e not getmained) will give you a S0C4. -- Mike Poil Java z/OS Level 3 Service IBM United Kingdom Limited, Hursley Park, Winchester SO21 2JN Internal: 246824 External: +44 (0)1962 816824 Java debugging: http://www.ibm.com/developerworks/java/jdk/diagnosis/ -- Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: TPROT condition code
Getmained storage can be paged out and?TPROT can get cc 3 because of it.? I was making a statement, wasn't asking questions.? For whatever reason ? was inserted amongst the text in my AOL mail. Sorry for the confusion and please ignore the ? above. Raymond Wong -Original Message- From: Michael Poil [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Thu, 13 Dec 2007 2:18 pm Subject: Re: TPROT condition code No -- Mike Poil Java z/OS Level 3 Service IBM United Kingdom Limited, Hursley Park, Winchester SO21 2JN Internal: 246824 External: +44 (0)1962 816824 Java debugging: http://www.ibm.com/developerworks/java/jdk/diagnosis/ -- Ngafei Huang [EMAIL PROTECTED] Sent by: IBM Mainframe Discussion List IBM-MAIN@BAMA.UA.EDU 13/12/2007 17:42 Please respond to IBM Mainframe Discussion List IBM-MAIN@BAMA.UA.EDU To IBM-MAIN@BAMA.UA.EDU cc Subject Re: TPROT condition code Getmained storage can be paged out and?TPROT can get cc 3 because of it.? -Original Message- From: Michael Poil [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Thu, 13 Dec 2007 11:26 am Subject: Re: TPROT condition code Can happen when the page has been paged out or?the page is not accessible or simply means no such page. Not due to a normal page fault. This is fixed up by z/OS under the covers after it gets the program check 11. Referencing an invalid page in the Address Space (i..e not getmained) will give you a S0C4. -- Mike Poil Java z/OS Level 3 Service IBM United Kingdom Limited, Hursley Park, Winchester SO21 2JN Internal: 246824 External: +44 (0)1962 816824 Java debugging: http://www.ibm.com/developerworks/java/jdk/diagnosis/ -- Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Mainframe Assembler Coding Contest
Just uploaded EZSAMPLE for #6. Raymond Wong Brookline, MA -Original Message- From: Don Higgins [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Wed, 12 Dec 2007 6:50 am Subject: Mainframe Assembler Coding Contest There is a new Mainframe Assembler Coding Contest underway here: http://z390.sourceforge.net/z390_Mainframe_Assemble_Coding_Contest.htm I've just added direct link to Powerpoint presentation by Khristine Harper on Asembler in the 21 Century. There is also a new link to upcoming SHARE session search page where if you select search by topic, you will find 22 sessions on mainframe assembler. There are also now links to the online POP, HLASM, and z390 references. This contest is intended to help new assembly language programmers to learn the language and for old timers to share some of their knowledge. you are welcome to submit as many new problems and solutions as you like. I'm also still looking for a few volunteer judges to help rank solutions. Even the simplest problems may have numerious solutions with different performance and or results on different machines. Joining the contest email group using Yahoo ID provides access to the submitted programs for download, assembly, and execution. The email group is used for posting updates on problems and solution rankings along with contributor names and school affiliations. The email group is also for discussion of the submitted solutions. Currently there are 8 problems posted and proposed solutions have been posted on the contest group email site for most but not all of them. Solutions consist of ASCII mainframe assembler source programs which can be assembled, linked, and executed using www.z390.org open source portable mainframe assembler and emulator on Windows or Linux systems. Check out problem #6 submitted by John Erhman for which no solutions have been posted yet. Don Higgins [EMAIL PROTECTED] -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: About dispatching process
If RB3 is pointed to by TCBRBP, RB3 is newest and is the top RB. TopRB get executed first when the TCB is given control. The way it’s chained is RB3-RBLINK field points to RB2. RB2-RBLINK points to RB1 and RB1-RBLINK points to the TCB. I think to obtain a spin lock (unconditional request) the SETLOCK routine first disables then goes into a spin loop to execute a sequence of instructions. The instruction sequences are tests-for-and-if-available-obtain-the-lock, return if successful, enable for interrupt, then disable, retry the lock obtain. So in that sense the spin loop is the same as the disabled loop. The enablement is accomplished via the WINDOW macro which enables for external interrupts and immediately disables so that emergency signal maybe received. The number of time to loop I think is limited (the detection) by a value set in some system area, possibly the CVT. (Of course somewhere within the instruction sequence, it would have to check for hierarchy.) Regards, Raymond Wong Compuware Corp -Original Message- From: Johnny Luo [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Thu, 25 Oct 2007 7:19 am Subject: Re: About dispatching process On 10/24/07, Vernooy, C.P. - SPLXM [EMAIL PROTECTED] wrote: I think what the manual says is the same as what you said. In a MP system, a disabled loop is observed as a spin loop by other processors. This is not exactly true: A disabled loop by itsself will not generate a problem. However, other processors will regularly want to talk to the disabled processor, via the SIGP instruction. The calling processor will spin (in a disabled loop, therefor spin loop) waiting for an answer. The disabled called processor will of course not answer and the calling processor will detect this and generate an excessive spinloop time out condition. So the spinloop is a normal, short duration, situation; an excisive spinloop timeout is a condition detected by an active processor, where an other processor does not answer. This can be for many reasons, being disabled, hardware problems etc. etc. Have a look at Initialization and Tuning Reference, member EXCPATxx, for more information on spinloops. his leads me to reconsider my understanding about the process of getting a pin lock. I used to think what SETLOCK does is just keeping on check the ockword and running disabled. Then, what is the difference between a spin oop and a disabled loop? So my guess is, what SETLOCK does is a 'timed disabled loop'. That is, most f the time it'll loop disabled but not forever. It will enable the rocessor regularly thus an excessive spin loop can be detected and handled y system. Did I miss something here? have another question about RB queue/chain. (A little off-topic but at east it is involved in dispatching process -_- ) Here is a RB chain after a new RB is added: TCB -- RB1 -- RB2 -- RB3 I think RB1 is the oldest and RB3 is the newest but is it true? Then this TCB is dispatched and the RB pointed by TCBRBP will be executed. hich one? I think it should be RB3 ( the newest) but I'm not sure. Thanks, ohnny -- or IBM-MAIN subscribe / signoff / archive access instructions, end email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO earch the archives at http://bama.ua.edu/archives/ibm-main.html Email and AIM finally together. You've gotta check out free AOL Mail! - http://mail.aol.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Using different storage key's
Just a thought. I think using key zero along with plain MVC instruction is probably the most effective way. But I do think this is the last thing you want to do for obvious reasons. If the source areas are not fetch protected, in the PC routine, can you just setup your data accessing environment accordingly (e.g. setup your ARs, ASCMODE) and just move the data between the 2 areas. Ngafei -Original Message- From: Miklos Szigetvari [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Thu, 29 Jun 2006 14:09:52 +0200 Subject: Using different storage key's Hi The short question: What is the most effective (fast) way to move data between different storage keys ? The longer story: We have an FSS application ( running in JESKEY) which starts different user programs, and exchange the data with the user programs (via SVC screening and access method routine changes ) For a long time, the user application was also run in JESKEY.. Since a year, the user applications started to use the shared memory (over Uss) and we found, it is necesary to run in key 8 to use shared memory So now the user applications are running in key8 , and we are using PC routines to go into JESKEY, and MVCSK and MVCDK to move data. It is working so, but the CPU consumption is much higher as it was before. How can I solve this ? Can I use here KEY=NINE (Storage Protection Override) . -- Mit freundlichen Grüßen / Best regards Miklos Szigetvari ISIS Information Systems GmbH Alter Wienerweg 12 2344 Maria Enzersdorf Austria --- This e-mail is only intended for the recipient and not legally binding. Unauthorised use, publication, reproduction or disclosure of the content of this e-mail is not permitted. This email has been checked for known viruses, but ISIS accepts no responsibility for malicious or inappropriate content. --- -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html Check out AOL.com today. Breaking news, video search, pictures, email and IM. All on demand. Always Free. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: VTAM Trace and manuals
Here's a link. http://www.elink.ibmlink.ibm.com/public/applications/publications/cgibin/pbi.cgi?SSN=06BOM0041890452602FNC=SRH -Original Message- From: Chris Mason [EMAIL PROTECTED] To: IBM-MAIN@BAMA.UA.EDU Sent: Wed, 15 Feb 2006 11:31:10 +0100 Subject: Re: VTAM Trace and manuals A reference to the following appeared in a Google Groups digest but not in my reader. I'll be interested to see whether or not this response will be correctly attached to the original. I suspect not. If not, perhaps someone will explain how postings get connected. freelance wrote: Hi, I'm trying to read a Vtam trace. Anyone knows what manual do I need? I guess I need at least the following: Systems Network Architecture: Formats (GA27-3136) Anyone knows where I can find it online, or if there is some kind of tutorial ? Thank you ! --- The obvious manual is CS SNA Diagnosis Vol 1 and, perhaps, 2, GC31-6850-00 and GC31-6850-00 for z/OS V1R7.0. Perhaps also CS SNA Data Areas Vol 1 and 2, GC31-6852-00 and GC31-6853-00. You can view all of these online using the following URL: http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/Shelves/F1A1BK60 again for V1R7.0. Start from here http://www-03.ibm.com/servers/eserver/zseries/zose/bkserv/ if you need another release, select All bookshelves and scroll down to Communications Server. SNA Formats is always handy. Use this URL: http://www.elink.ibmlink.ibm.com/public/applications/publications/cgibin/pbi.cgi?CTY=USFNC=SRXPBL=GA27-3136-16 and click on Read for most effective online access. Of course, there are many different VTAM traces from the many options of the internal trace to the relatively simple buffer trace. You didn't say which type you were trying to read. In connection with VTAM tracing, there's also another point I never hesitate to mention - well, I shouldn't but there's one lister who takes me to task when I do - that, if you know you need a VTAM buffer trace, it's (one of) your local system(s) that needs tracing and you have access to NetView, you should use the Session Monitor complete PIU (CPIU) trace rather than messing about with GTF and having to create a printout. In terms of really understanding what's going on, the only tutorial is suitable education and experience. By experience here I mean that you have learned to understand traces where everything is working perfectly. This way, when something goes wrong, you can mentally compare the trace with what you know you should expect. Chris Mason -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
