[Info-vax] Whither VMS?

[VAXman- at SendSpamHere.ORG]

In article <cp85ah.k4n.ln at gw1>, Jordi Guillaumes i Pons <send.me at no.spam> writes:
>En/na VAXman- @SendSpamHere.ORG ha escrit:
>> 
>> Envision Rod Sterling walking out from the background darkness into the 
>> shadowy light, camera focused on him from his lapel and tie, and with a
>> cigarette lit and its smoke encircling his head...
>> 
>>     "Picture, if you will, a man who has just consumed too much wine 
>>      or too much LSD or who has simply fallen squarely upon his pate
>>      from an appreciable height, and is now totally delusional in the 
>>      usenet newsgroup of comp.Twilight.Zone..."
>> 
>> Where's this VAX exec bit?  
>
>Perhaps in my imagination? I don't read about VAX arch and VMS internals 
>sinde the early nineties, but I _think_ the entries in the page table 
>have a protection mask allows marking a page as readable, but 
>non-executable. I am wrong on that? Too many years, too much coffee and 
>too many arch changes in my life... :(

VAX PTE's maintain read and write access for the various modes only.  There
is no EXECUTE bit.  Not on the Alpha either.  Only on ia64 is there such a
concept.

-- 
VAXman- A Bored Certified VMS Kernel Mode Hacker    VAXman(at)TMESIS(dot)ORG

  http://www.quirkfactory.com/popart/asskey/eqn2.png
  
  "Well my son, life is like a beanstalk, isn't it?"