On 23Apr16:1717+0000, David L. Craig wrote: > On 23Apr16:1542+0000, Farley, Peter wrote: > > > A question out of pure curiosity: In the z16 version of PoOP (SA22-7832-13) > > there is mention in the "Summary of Changes in Fourteenth Edition" section > > of this enhancement: > > > > Mapped-I/O-addressing facility [PCI ONLY] > > > > I can find no other reference to such a facility anywhere in that document. > > > > Does anyone know what that item refers to? > > > > Peter > > That technology is an intruder from the x86 line of > processing. It it's a legitimate change, there should > be a whole lot of explanation somewhere. In the IBM > deployment, it might reside below the PoPs realm entirely. > PCI seems to mean the same as in the x86 domain, thus an > interface type for motherboard extension cards, including > the PCI/e specification. Is PCI a PRQ? Does IBM still > market facilities for x86 coprocessing within Z boxen?
Sigh... s/It it/If it/ and s/PRQ/RPQ/ Everything you ever wanted to know about PCI and memory mapped I/O (MMIO) in one post: https://resources.infosecinstitute.com/topic/system-address-map-initialization-in-x86x64-architecture-part-1-pci-based-systems/ -- <not cent from sell> May the LORD God bless you exceedingly abundantly! Dave_Craig______________________________________________ "So the universe is not quite as you thought it was. You'd better rearrange your beliefs, then. Because you certainly can't rearrange the universe." __--from_Nightfall_by_Asimov/Silverberg_________________ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
