On Fri, 16 Nov 2012 13:28:02 -0600, Anthony Fletcher <[email protected]> wrote:
>I need to find out which entries in the user part of the TYPE-3 ESR (SVC 109) >table are in use so that duplicate use can be avoided. > >Using SHOWZOS I have the following entries that are of interest two of my >systems that run the program that uses SVC 109 ESR # 206. > ># EP Desc Type # EP > Desc Type > >. >. > 52 819E565C - T3 53 85FA7910 P IDICSVCR > T3 > 54 819E565C - T3 55 819E565C - > T3 >206 80D6D000 P IGX00206 T3 207 819E565C - T3 > >208 819E565C - T3 209 819E565C - > T3 > >Numbers 52-55 are the highest in the IBM range and there are no higher numbers >in use. > >I know what 206 represents and how it got there. >What I would like to understand is what the entries for 207, 208 and 209 >represent. >The EP address is, I think, the IGXERROR entry point. since the same address >is used in all the IBM part of the ESR TABLE (below 200) that do not have >modules identified > >Could this mean that at some stage some routine has set up and used 207 - 209 >then withdrawn the code and reset the EP address? >If this is the case, then of course 207-209 have to be considered as 'in use' >by 'something' until I can find out definitely what used them. I could not >find modules IGX00207, IGX00208, or IGX00209 in LPA or LINKLIST. > SHOWMVS seems to display many that aren't in use - but not all. I'd have to go through the code and find out why it decides to display those. I double checked with code I wrote for IPLINFO and MXI and I get the same results with both for those that are unused. Yes, if the address is IGXERROR it is not in use. At least that is how my code decides. Mark -- Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS mailto:[email protected] Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html Systems Programming expert at http://expertanswercenter.techtarget.com/ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
