In <[EMAIL PROTECTED]>, on 02/01/2005 at 08:26 PM, Charles Mills <[EMAIL PROTECTED]> said:
>In spite of your :-) is that not how some of the floating point >simulation works or used to work? VM uses a similar strategy for >simulating privileged instructions for guests, catching the 0C2. No; there never is an 0C2. CP catches the initial program interrupt. BTW, OS/360 did the same thing for PI 01 on the 360/91, to simulate missing instructions, and so did the "commercial instruction" feature of the 360/44. -- Shmuel (Seymour J.) Metz, SysProg and JOAT ISO position; see <http://patriot.net/~shmuel/resume/brief.html> We don't care. We don't have to care, we're Congress. (S877: The Shut up and Eat Your spam act of 2003) ---------------------------------------------------------------------- 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