On Thu, 8 Nov 2012 11:47:08 -0500, John Gilmore <jwgli...@gmail.com> wrote:
>Peter, > >Some nit-picking follows. You wrote > >| the area (sic) starting just above ECSA and always >| ending at 2GB ((-1, or X'7FFFFFFF'). > >which is not quite right. Viewed as a twos-complement signed fullword the >value > >x'7FFFFFFF' > >is decimal +2147483647. > >The value of -1 expressed in the hexadecimal for a twos-complement >binary fullword is then > >x'FFFFFFFF'. > >Viewed instead as an unsigned storage address it is decimal > >4294967295 > >i.e., 2^32 - 1, instead; and this last value is of course the highest >four-byte storage address available. > >John Gilmore, Ashland, MA 01721 - USA > Maybe I missed something... Didn't you just change MVS/XA architecture? 2^31 - 1 or x'7FFFFFFF'. -- Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS mailto:m...@mzelden.com Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html Systems Programming expert at http://expertanswercenter.techtarget.com/ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
