On Thu, Aug 22, 2019 at 7:18 AM Raphael Jacquot <sxp...@sxpert.org> wrote:
> On 8/22/19 2:07 PM, John McKown wrote: > > https://www.theregister.co.uk/2019/08/20/ibm_openpower_isa/ > > > > Basically, from what I read, this means that other companies can produce > > competing chips which implement the Power ISA, without requiring a > license. > > It is more likely that the Sun will become a supernova than IBM would > > "open" the IBM z ISA. > > > > did the competition (amdahl & others) had a "license" to produce > mainframes ? > Good question. I was told that the 3rd party CPU hardware parties quit when XA came out do to some change. But I don't know if it was licensing, or maybe some patent, or just too expensive in the R&D area. Maybe that is why IBM doesn't go after Hercules/390. -- I find television very educational. The minute somebody turns it on, I go into the library and read a good book -- Groucho Marx Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
