From: james.harris.1@gmail.com   
      
   On 06/01/2023 18:14, Scott Lurndal wrote:   
   > James Harris  writes:   
   >> On 15/12/2022 01:12, Dan Cross wrote:   
   >>> In article ,   
   >>> James Harris   wrote:   
   >>   
   >> ...   
   >>   
   >>>> The Pentium Architecture and Programming Manual, Order Number 241430 says:   
   >>>>   
   >>>> "The 32-bit Intel architectures have different requirements for enabling   
   >>>> paging and switching to protected mode. The Intel386 processor requires   
   >>>> following steps 1 [jump] or 2 [identify mapping] above. The Intel486   
   >>>> processor requires following both steps 1 and 2 above. The Pentium   
   >>>> processor requires only step 2 but for upwards and downwards code   
   >>>> compatibility with the Intel386 and Intel486 processors, it is   
   >>>> recommended both steps 1 and 2 be taken."   
   >>>   
   >>> So now we're down to compatiblity with processors that are a   
   >>> quarter century obsolete. :-) Seriously, on a modern x86   
   >>> processor, you don't need the jmp after turning on paging.  It   
   >>> won't hurt anything should someone try and run this on an   
   >>> actual 386 or 486, but it is no longer required.   
   >>   
   >> I would agree with you that it's been many years since the 386 and 486   
   >> were available new from Intel ... but they are far from obsolete. Even   
   >> now they are bought and sold second hand.   
   >   
   > That doesn't make them not obsolete.    Many obsolete items are still   
   > purchased and sold by collectors, hobbyists, etc (e.g. hand-crank   
   > wallphones, WE 500 desksets, Burroughs Calculators).    They're still   
   > obsolete.   
      
   Sure, but machines with old CPUs are still //in use//, as I mentioned.   
      
   Some definitions of 'obsolete':   
      
   "no longer used because of being replaced by something newer and more   
   effective" (MacMillan)   
      
   "No longer in use; gone into disuse; disused or neglected (often in   
   favour of something newer)" (Wiktionary)   
      
   "no longer in use" (Wordnet)   
      
   Maybe another word would fit better, e.g. deprecated: "Said of a   
   function or feature planned to be phased out, but still available for   
   use." (Wiktionary) Though there may be a more apt word than that.   
      
      
      
   --   
   James Harris   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)