>Openlist is defined in my DSECT area: > openlist open 0,mode=31,mf=l >+OPENLIST DC 0F'0' >+ DC AL1(128) >+ DC AL3(0) >+ DC A(0)
If truly in the "DSECT area", then that is the problem. Having something with DC's in a "DSECT" does not do any initialization. Therefore it seems logical to presume that the storage was not initialized. >I get S0C4 that >points to the next instruction after my OPEN, On most 0C4's, the PSW is the updated after-program-check PSW. You should therefore look at the instruction before what the PSW points to in order to see the instruction that "caused" the PIC 4. It is extremely unlikely that the 0C4 was within OPEN processing itself (i.e., the SVC processing) yet the PSW for the PIC 4 shows within your module. But if you are not actually looking at the time-of-error PSW, it is quite possible that the PSW for your RB points to the instruction after the SVC. >However, in the case of OPEN, you can just do an MVI >openlist,X'80' for an input file. This is a very bad idea. The interface to services documented by macro is the macro. If you "do it yourself" all bets are off. >2) IBM has a lot of funny macros that were shoehorned into RENT >support. For these it's necessary to define a copy in your >CSECT, and another in your DSECT, and move the pattern. This was hardly "shoehorned". It was a very intentional optimization (which newer macros have largely abandoned because of the complexity) to avoid doing tihngs at runtime that can be determined at assembly time. It also was required by the IBM standards that were in place for a long time, whereby execute form was not allowed to set anything other than what was specified on the execute invocation.. This is the standard MO for just about every macro produced before the mid 80's. Some of those macros support a "COMPLETE" suboption of MF on the execute form which indicates to do complete initialization of the parameter area (and do complete syntax checking for required parameters).. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- 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
