Re: [rtl] The HLT instruction

[boermans@cs.utwente.nl (Robert Boermans)]

> From mikem@rtlinux.cs.nmt.edu Thu Oct  1 13:18 MET 1998
> PayPC System Mail Subscriber wrote:
> 
> > Nathan Harris said in [rtl] The HLT instruction at 30/Sep/1998 (Wed) 00:26:55.
> >
> > > Does RTLinux and/or Linux use the HLT instruction during the OS idle
> >
> > I can speak for Linux.... it uses HLT when no tasks are in "ready" state.
> >
> > I don't have rt-linux, but I doubt that aspect was changed.
> >
> 
> I *hope* it has been changed. A real time system should *not* be put to sleep to
> save power!
> 
> Daniele Lugli

The system doesn't power down when you do HLT, it just stops executing instructions, and will continue immideatly if there is an interrupt, i don't see why we wouln't want that.

Robert Boermans
--- [rtl] ---
To unsubscribe:
echo "unsubscribe rtl" | mail majordomo@rtlinux.cs.nmt.edu OR
echo "unsubscribe rtl <Your_email>" | mail majordomo@rtlinux.cs.nmt.edu
----
For more information on Real-Time Linux see:
http://www.rtlinux.org/~rtlinux/