[email protected] (Anne & Lynn Wheeler) writes: > In the transition from MVT to OS/VS2 (aka virtual memory), the same > problem showed up. The original implementation involved putting a little > bit of code to create 16mbyte virtual address space for MVT, but the > major effort was hacking CCWTRANS (from CP67) into the side of EXCP > processing (EXCP had the same problem with access methods creating > channel programs in the application virtual address space ... as CP67 > did with virtual machine channel programs). Old reference by somebody in > POK that was in the middle of the transition to OS/VS2 and virtual > memory ... includes reference that OS/VS2 release 2 (MVS) was on glide > path to OS/VS2 release 3 (FS)
re: http://www.garlic.com/~lynn/2013h.html#44 Why does IBM keep saying things like this http://www.garlic.com/~lynn/2013h.html#45 Storage paradigm [was: RE: Data volumes] http://www.garlic.com/~lynn/2013h.html#47 Storage paradigm [was: RE: Data volumes] just finished scanning my copy of cp67 PLM (although it was missing a couple pages) ... and uploading to bitsavers ... it should be showing up shortly in http://bitsavers.org/pdf/ibm/360/cp67 CP67 CCWTRANS (which was hacked into EXCP to perform the channel program virtual->real translation for OS/VS2) is described starting on page "35" (physical page "45" in the PDF file). -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
