On 21 June 2011 21:09, Paul Gilmartin <[email protected]> wrote: > On 6/21/2011 5:12 PM, Tony Harminc wrote: >> >> On 21 June 2011 18:47, Mark Boonie<[email protected]> wrote: >>>> >>>> When did this doc change happen? >>> >>> It appears it was part of SA22-7832-05, published in April 2007. >> >> Ah yes, thank you - I see the change from "improbable" to "will never" >> for opcode 00. But the B2Ex series disappeared from the "improbable" >> list some time before then. >> > Are some of these reserved for VM Communication Facility, implemented > in software in the exception handler?
No - they're evidently all on the metal (z10, according to the good folks at Tachyon). IIRC, VMCF uses Diagnose, and IUCV uses the single opcode B2F0 for all functions. Tony H.
