Re: Cycles per ASM instruction

Anne & Lynn Wheeler wrote:

(snip regarding ISAM)

> ... being able to fetch information from disk that would change the
> channel (i/o) program "on the fly" (somewhat the equivalent of
> self-modifying instruction streams ... which were frequently done in
> the same period ... compensate for constrained real storage).

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?

(snip)

-- glen