On Mon, Feb 9, 2009 at 3:40 PM, Ivan Warren <[email protected]> wrote:
> Don Russell wrote: > >> BC mode PSWs are no longer supported, so if you are still running ACP 9 or >> TPF 1.0 you have some old hardware indeed. ;-) >> >> >> > The fact is.. > > A z/Arch PSW is a BC mode PSW ;) (E bit is 0 !) Well, good luck with your SIO instructions there. ;-) I think your argument is what might be called a "straw man". Pre-ESA the BC/EC mode was used to change between 360 and 370 mode. 360 mode is gone now, though I suppose some 360 applications would continue to run. But not programs that depend on the architecture. SIO vs SSCH for example. ---------------------------------------------------------------------- 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
