I suspected as much. In other words, it works as coded. Bill Fairchild
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of john gilmore Sent: Monday, August 01, 2011 11:41 AM To: [email protected] Subject: Re: PDS CORRUPTION - I/O ERROR I suspect that all of the parties to this now muddy dispute are right, at least in part and to quite different degrees. Shane's view that the rest of us can safely ignore it is eminently correct, but if it is to be resolved it will be necessary to 1) use time lines for both the DSCB and the DCB, 2) to abjure troublesome terminology, notably the word 'override', focusing instead upon what is where at what time and where it comes from, and 3) to distinguish carefully between reads and writes. When I teach this topic I use both time lines and trees; and I recommend the use of such devices, although they are of course difficult to put into an email. John Gilmore Ashland, MA 01721-1817 USA ---------------------------------------------------------------------- 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
