My "That is not correct" was with regards to the whole paragraph. Why did you mention a 2 GiB bar if you are only talking about S/370 machines?
Parameter lists are not a problem on S/370 either, since it will be executing in AM24 as the only choice. ie the 32-bit address registers in the 32-bit program will be masked down to 24 bits. A trimodal 32-bit module will run just fine on S/370 MVS 3.8j. BFN. Paul. On Wed, 9 May 2018 20:04:17 -0500, Joe Monk <[email protected]> wrote: >You didn't even read the post. > >I specifically said "IBM 370". There isnt an IBM 370 machine out there that >can run AMODE 64. > >So yes it is correct. > >Joe > >On Wed, May 9, 2018 at 7:26 PM, Paul Edwards <[email protected]> wrote: > >> On Wed, 9 May 2018 19:17:37 -0500, Joe Monk <[email protected]> wrote: >> >> >There is no such thing as a 32-bit load module on any of the platforms you >> >have mentioned. >> >> You're quibbling over semantics. A program that >> uses 32-bit data registers and 32-bit address >> registers and 32-bit code pointers and 32-bit >> data pointers is a 32-bit load module. >> >> >IBM 370 machines running MVS 3.8J (OS/VS2 3.8) are incapable of running >> >32-bit code due to their use of the high bit for passing parameter lists, >> >which is the entire reason for the existence of the 2GB-4GB bar. >> >> That is not correct. You can run in AMODE 64 >> so long as you step down to AMODE 24/31 >> (wherever you were loaded) prior to executing >> whatever code requires the parameter list >> convention. You also need to obtain the memory >> for the parameters from 31-bit storage. AM64 >> means that 32-bit modules no longer need to >> be constrained by the 2GiB bar, which is the >> entire reason for this thread. >> >> BFN. Paul. >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to [email protected] with the message: INFO IBM-MAIN >> > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
