When choosing an SVC slot, I look for five in a row that all point to the same address. I then presume that address is IGCERROR, and I take one for my own use. That works for the SVC table. I've never investigated the ESR table. On Nov 16, 2012 2:29 PM, "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 209 then withdrawn the code and reset the EP address?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. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
