On Tue, 13 Feb 2024 at 13:19, Charles Mills <[email protected]> wrote:
> I am interested in writing a program to read the IPL records from a DASD > volume. (Read only, not update). I am comfortable with XDAP but how do I > OPEN a "dataset" that would include cylinder 0? > > APF, OPERATIONS and so forth are not out of the question. > You'll certainly need APF. There are many routines that do this kind of thing on the CBT tape that you could use to get the idea or as a model or perhaps even reuse. Some of the code is very old, and doesn't support new-fangled stuff like DSNTYPE LARGE and extended volumes and such. But to read the IPL records probably code from 1972 onwards will work. Try, for example, program CHRDUMP in file 558. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
