I just grabbed the first one I found at bitsavers. AFAIK, everything from BOS up supported a VTOC on DASD from day one, other than the card and tape only software.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Tom Marchant <0000000a2a8c2020-dmarc-requ...@listserv.ua.edu> Sent: Friday, May 24, 2024 1:54 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: VTOCs vs. catalogs Even earlier, in November, 1966, https://bitsavers.org/pdf/ibm/360/dos/C24-5036-1_DOS_System_Control_and_System_Service_Programs_Nov1966.pdf Bottom of page 53 references VTOCs -- Tom Marchant On Fri, 24 May 2024 17:21:43 +0000, Seymour J Metz <sme...@gmu.edu> wrote: >Nope. ><http://bitsavers.org/pdf/ibm/360/dos/C24-3427-3_Disk_Operating_System_Data_Management_Concepts_Feb68.pdf> > >The fact had DLAB and DLBL statements does not mean that the was no VTOC. > >-- >Shmuel (Seymour J.) Metz >http://msoon.gmu.edu/~smetz3 >עַם יִשְׂרָאֵל חַי >נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר > >________________________________________ >From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of >Lennie Bradshaw <lennie-brads...@outlook.com> >Sent: Friday, May 24, 2024 12:53 PM >To: IBM-MAIN@LISTSERV.UA.EDU >Subject: Re: VTOCs vs. catalogs > >VTOCs were introduced in a release of DOS/VS after the one we were using. We >definitely used //DLBL statement to specify disk extents. >Lennie ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
