For starters, read up on Define Extent and Locate, but EXCP hangs a prefix on that limits what you can do, analogous to the old Set File Mask. If you're authorized, you can do what you want.
For EXCPVR you'll want to write a few appendages. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר ________________________________________ From: IBM Mainframe Assembler List <ASSEMBLER-LIST@LISTSERV.UGA.EDU> on behalf of Tony Thigpen <t...@vse2pdf.com> Sent: Thursday, July 18, 2024 4:38 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: Looking for a good book on ECKD EXCP, CCWs, etc. Eventually, both. I can play all I want, anytime, on the DR box. Tony Thigpen Seymour J Metz wrote on 7/18/24 4:19 PM: > I'd advise asking on ibmmain. > > Are you looking for authorized or unauthorized? > > -- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > עַם יִשְׂרָאֵל חַי > נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר > > > > ________________________________________ > From: IBM Mainframe Assembler List <ASSEMBLER-LIST@LISTSERV.UGA.EDU> on > behalf of Tony Thigpen <t...@vse2pdf.com> > Sent: Thursday, July 18, 2024 4:13 PM > To: ASSEMBLER-LIST@LISTSERV.UGA.EDU > Subject: Looking for a good book on ECKD EXCP, CCWs, etc. > > I have several books that include basic EXCP/CCW dasd programming, but > nothing that I would consider 'deep' enough on ECKD programming. Some of > the books I have are were good with CKD, but not ECKD. > > So, I am looking for suggestions for books that are designed to teach > someone complex ECKD programming within the restrictions imposed by the OS. > > Tony Thigpen
