<delurk> PL/X? True, but I personally think that is not the primary reason.
Parts of z/VSE are in PL/X, but you can get the source. You just can't do anything with it. :-) For a while, PL/X was offered to ISV's at a price. I don't know if anyone ever took them up on it, though (maybe one or two). IBM might still be a little gun-shy about releasing source (think Hitachi and Fujitsu). And I've heard rumors that Fujitsu-Siemens' (née Siemens-Nixdorf, née Siemens, née...) VM2000 hypervisor was based on the last public domain version of VM/370 (although made 31-bit friendly). Later, Ray -- M. Ray Mullins Roseville, CA, USA http://www.catherdersoftware.com/ http://www.mrmullins.big-bear-city.ca.us/ http://www.the-bus-stops-here.org/ > -----Original Message----- > From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On > Behalf Of Rob van der Heij > Sent: Wednesday September 14 2005 13:16 > > On 9/13/05, McKown, John <[EMAIL PROTECTED]> wrote: > > > Much of z/OS is OCO because: (1) IBM doesn't want people to use > > "internal" interfaces, probably because it forces IBM to > "freeze" the > > interface thus inhibiting changing it radically; (2) it is > a good way > > to make some money by selling the information under an NDA. > > Not sure whether this applies to z/OS as well, but a popular > reason for not providing the source code can also be (3) the > code is written in a language for which IBM does not want to > ship a compiler. > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390