If you look at the Linux source code for z, you'd find that SIGA is an undocumented z instruction.
-- John McKown Maranatha! <>< Sent from my Vibrant Android phone. On Nov 4, 2010 4:04 PM, "John Blythe Reid" <[email protected]> wrote: Thanks a lot, Bill. That was the implication of what I'd read, that an instruction called SIGA, did the I/O. They didn't use the word 'command' as would normally be used with a CCW. There's also this diagram that shows that it's quite a different flow: [image: Non-QDIO versus QDIO data paths] Regards, John. On 4 November 2010 20:04, Bill Fairchild <[email protected]> wrote: > I didn't mean to imply that... -- John Blythe Reid, Técnico de Sistemas de z/OS y de Sistemas Transaccionales, Barcelona, España. ... For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] w... ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
