Re: Cycles per ASM instruction

On Feb 27, 12:48 am, glen herrmannsfeldt <g...@[EMAIL PROTECTED]
>
wrote:
> Which reminds me of the CMS option for handling ISAM self
> modifying channel programs, though I never knew what the option
> really did.  Does it really allow self modifying channel programs?


When you turned the option on, CP would basically look at channel
programs to see if they looked like the ISAM ones that were self
modifying, and would them simulate them separately.  This was none too
secure, at least in early versions of VM, where real self-modification
was allowed on a partially virtualized channel program.