Erik Malund said:

"it does have a definition"
yes, so does "the cannonball express"

No, I'm afraid you're wrong:

http://dictionary.reference.com/search?q=...xpress

then try here:
http://www.mindspring.com/~jhdeasy/lirr/page3.html


as I stated:
"Why do I use URTOS/DTOS or whatever? to stress that these thing have nothing to do with the webster definition of "real time".

But they do. I quoted the Webster definition of real time in my previous post - take a look.
Which is disagreeing with your definition.



Again, as it is a "a poor choice for what it describes" what is wrong with stating that?

Nothing - what's your point?
That you keep complaining about me doing so



just see here:

if you google for "dictionary "real time"" the first that commes up is
http://www.webopedia.com/TERM/R/real_time.html

which start
"Occurring immediately. The term is used to describe a number of different computer features.... "

so, not only I, but a dictionary entry is "wrong"

Yes, you're both wrong.
And of course you, in your opinion, are right

Show me some software you're written that responds 'without delay'.
Well you state that immediately is "whenever, if less than...", I state it is "as fast as possible with no concern for anything else"


The issue is that the definition of RTOS and RT is not the same.

You're right:
RTOS: Real time operating system
RT: Real time.
If you want to ignore the meaning, go ahead, it should be obvious.

RTOS is an operating system which gives one an opportunity to write software which will run on the RTOS to form a real time system. If you use an operating system that is not 'real time' you cannot do this. You may achieve it by luck but you cannot guarantee it.

Sure I can, where is the "luck" in responding to something in an ISR which is the only ISR with highest priority?. If, however, you use a URTOS and happen upon the time when it has interrupts disabled, you may have to wait too long.



Once more:
The reason I keep using URTOS etc is to make darn totally absolutely sure that the point that a URTOS is NOT "real time" comes across.

Nothing is real time according to your definition of real time.
Well your "real time" is just "unreal"

You stated in a previous post: "As I said before, in my opinion the expression 'real time' is a poor choice for what it describes" and I have no Idea why you are trying to convince me to use something that is "a poor choice for what it describes".

Erik