Re: Slow this puppy down

HandyMan <luke77561@xxxxxxxxx> wrote in part:
I don't recall seeing HLT used in much code I have seen in
the past. Maybe in some TSR code ?

I wrote a pwoersavings TSR with HLT. Otherwise, it is
probably the _least_ coded instruction. Most OSes have
precisely _one_ coded (in the idle thread), and it is
a priviliged instruction that faults in usercode.

OTOH, it is probably the most executed instruction,
certainly on user PCs. All modern OSes idle at HLT
to activate CPU hardeward powersavings (when enabled).

-- Robert

.

Relevant Pages

  • Re: Damn you, FEDEX! or Nikon D40 lost in Springfield, MO blackhole.
    ... the 2 mp Mavica he had been using with a Nikon D40. ... After shopping around, he got me to order one for him. ... The shipper had it insured, but from what I have read it could take weeks to sort this crap out. ... You may get your insurance from FedEx and a couple weeks later they find it and deliver it. ...
    (alt.photography)
  • Re: HLT
    ... version of the 80186 (IIRC) and came across what he called ... a HALT and CATCH FIRE instruction. ... enough to do when you accidently branch to the clock and try to execute it. ... > this instruction (many other processors don't have something like HLT, ...
    (borland.public.delphi.language.basm)
  • Re: Slow this puppy down
    ... All modern OSes idle at HLT ... Is that an instruction where I would need the .386P? ... is an enabled network card or other interrupt generator, ... The result will be a pgm that runs independant of CPU speed ...
    (alt.lang.asm)
  • Re: An interesting SR puzzle
    ... sitting on the clock as it whirls ... > person doing the whirling. ... > frame of the person sitting on the clock, because SR, as it was taught to ... was about relating the reference frames of different observers. ...
    (sci.physics)
  • Re: An interesting SR puzzle
    ... sitting on the clock as it whirls ... > person doing the whirling. ... > frame of the person sitting on the clock, because SR, as it was taught to ... was about relating the reference frames of different observers. ...
    (sci.physics.relativity)