On Wed, 11 Jan 2023 at 11:09, Paul Gilmartin < [email protected]> wrote:
> On Wed, 11 Jan 2023 15:56:02 +0000, Seymour J Metz wrote: > > >The quoted text is on page 10-56 (p. 1072 in the PDF) of a227832d.pdf, > the June 2022 edition of z/Architecture Principles of Operation, > SA22-7832-13. What is the issue with "doubleword"? > > > If it replaces a 16-byte PSW it should be a quadword. > > (Or does it mean "the content of the location designated by the doubleword > at the > second-operand address"?) > I'm really not seeing what problem you have with "... replaced by a 16-byte PSW formed from the contents of the doubleword at the location designated by the second-operand address". The new 16-byte PSW is "formed from" the short PSW at the second operand address, using an algorithm that is explained in detail nearby. There isn't a 16-byte PSW at the second operand address. You're not usually thick, so I think I must be missing your point. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
