On Wed, 2005-09-07 at 07:41 -0500, McKown, John wrote:
> This will likely sound really crazy, but I have actually looked at the
> Hercules/390 source in order to try to better understand what some of
> the newer, complex, instructions do. I find that reading C code
> (assuming no errors in implementation!) is far easier than the "English"
> explanation in the PoPS.
Back in 1964, Falkoff, Iverson and Sussenguth published their paper "A
Formal Description of System/360" in the IBM Systems Journal. See:
http://researchweb.watson.ibm.com/journal/sj/032/falkoff.pdf
It used a variant of "Iverson notation" that was described in Ken
Iverson's 1962 book "A Programming Language". (Eventually Iverson
notation became APL.)
Whether you think APL is easier to read that the Principles book is a
matter of debate.
--
David Andrews
A. Duda and Sons, Inc.
[EMAIL PROTECTED]
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