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what does the non-maskable interrupt do?

zon_cpp15-Aug-07 21:31

15-Aug-07 21:31

hi!
what does the non-maskable interrupt do?

does it disable other interrupts? whitch interrupts?

Zo.Naderi-Iran

Re: what does the non-maskable interrupt do?

markkuk15-Aug-07 22:37

15-Aug-07 22:37

The non-maskable interrupt causes the machine to show a BSOD and hang. See: http://support.microsoft.com/kb/315223[^]

Re: what does the non-maskable interrupt do?

John R. Shaw15-Aug-07 22:48

15-Aug-07 22:48

Wish I still gave a <blank> about that level.

Doe’s it still disable other interrupts – no!

Look this is Windows and like most other modern Operating Systems you will need to dig deeper.

Sorry – I am tiered and could be wrong – keep looking - Frown | :(

Frown | :(

INTP
"Program testing can be used to show the presence of bugs, but never to show their absence."Edsger Dijkstra

Re: what does the non-maskable interrupt do?

James R. Twine16-Aug-07 2:35

James R. Twine

16-Aug-07 2:35

   IIRC, and it has been a while since I was messing around with the pins on a CPU, the NMI is an interrupt that cannot be turned off (masked). What it does depends on the CPU that you are using.

   For example, a NMI on a 6502 causes the process or to jump to whatever address is stored at FFFA/FFFB. On a Z-80, I believe it jumps to 0066. On a Z-80, an NMI cannot be interrupted by another normal interrupt, but can be interrupted by another NMI, etc.

   The end result is - the answer depends on the processor (or processor family) that you are using and what you are trying to accomplish.

   Peace!

-=- James
Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles

To Enable A Non-maskable Interrupt

zon_cpp15-Aug-07 21:21

15-Aug-07 21:21

hi!
How do i enable a non-maskable interrupt?

is my program corrupt? if i ebable this interrupt in my program, and then disable it, soon.

Zo.Naderi-Iran

Re: To Enable A Non-maskable Interrupt

markkuk15-Aug-07 22:34

15-Aug-07 22:34

You can't disable the NMI (that's why it's called "non-maskable), so it's always enabled.

tyagineha15-Aug-07 20:53

15-Aug-07 20:53

i m using following function in my project but gtng an exception error:

CString CMyProj::OnTextList()
{
int index;
CString _case;
index = m_caselist.GetCurSel();

m_caselist.GetText(index,_case);

return _case;
}
can any body tell me why i m getting error in this code?????????

NT

Re: CString return

karle15-Aug-07 21:21

15-Aug-07 21:21

may check if the index is >= 0
If no item is selected the index has a value of -1.
Check LastError code using GetLastError()

Otherwise please post the error message / exception.

Re: CString return

tyagineha15-Aug-07 21:33

15-Aug-07 21:33

exception error i m geeting is "Debug Assertion Error".

NT

Re: CString return

jhwurmbach15-Aug-07 21:39

15-Aug-07 21:39

GetText is checking its input data.
What are you inputting to it?
Use the debugger to set a breakpoint and check the value.

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: CString return

tyagineha15-Aug-07 22:10

15-Aug-07 22:10

I dont want return value of GetText() function
i want return value of _case variable

NT

Re: CString return

jhwurmbach15-Aug-07 22:12

15-Aug-07 22:12

Sure. But you are calling GetText() with index and _case.
And GetText is checking its paramteres...

Did you ever check the value of index?

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: CString return

tyagineha15-Aug-07 22:16

15-Aug-07 22:16

But i think the function of GetText() is that watever text is at index(watevr value) will be stored in _case.

just tell the way i m returning the value of _case is correct or not????

NT

Re: CString return

jhwurmbach15-Aug-07 22:40

15-Aug-07 22:40

tyagineha wrote:
But i think the function of GetText() is that watever text is at index(watevr value) will be stored in _case.

You could have read MSDN about GetText(). The index is zerobased.

Hence my repeated question (which you seem to refuse to answer): What are you calling GetText() with?
Are you calling it with invalid indices (like, perchance, -1)?

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: CString return

tyagineha15-Aug-07 23:00

15-Aug-07 23:00

ok i m sorry 4 that....
i m inputting a ListBox value..........

NT

Re: CString return

jhwurmbach15-Aug-07 23:04

15-Aug-07 23:04

And your Listbox does have 5 entries?
Or does it have 4, and the last one is selected?

Then you have falling in the ole off-by-one trap. Poke tongue | ;-P

Poke tongue | ;-P

Indices are counting from 0: the last element of the Listbox has the index (SizeOfListbox -1)

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: CString return

tyagineha15-Aug-07 23:12

15-Aug-07 23:12

rite now listbox has only one entry.
this function i m defining in one class and calling in another class...

the problem which u r saying..

that problem i m nt gntng when i m in same class
but when calling this function fron another class then error is cuming.

tell me watshld i do now??

Nt

Re: CString return

jhwurmbach15-Aug-07 23:16

15-Aug-07 23:16

tyagineha wrote:
tell me watshld i do now??

Write proper English. I am not a native speaker and may get your abbreviations wrong. Also, this stuff is complicated enough.

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: CString return

tyagineha15-Aug-07 23:23

15-Aug-07 23:23

Tell me what should i do now????

NT

Re: CString return

jhwurmbach15-Aug-07 23:25

15-Aug-07 23:25

Set a breakpoint on return _case; and see if it looks OK in the debugger.

If it does, single step into your other class and look if it is still OK.

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: CString return

tyagineha15-Aug-07 23:35

15-Aug-07 23:35

its not ok in debugger...
its giving debug error.

i just want to return the value which is in _case.

i want to use this value furthur.

NT

Re: CString return

jhwurmbach15-Aug-07 23:37

15-Aug-07 23:37

tyagineha wrote:
i just want to return the value which is in _case.

So the CString _case is ok at the end of your function (as listed above). And it is not OK in the function calling that?

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: CString return

jhwurmbach15-Aug-07 23:32

15-Aug-07 23:32

tyagineha wrote:
rite now listbox has only one entry.

But you are calling for the 4th one?
Could this work?

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: CString return

tyagineha15-Aug-07 23:38

15-Aug-07 23:38

sorry i m not getting you.

Nt

Re: CString return

jhwurmbach15-Aug-07 23:41

15-Aug-07 23:41

You said:
"The index is 4"
and
"rite now listbox has only one entry."

Are you calling CListBox::GetText( 4, _case) in a CListBox that has only 1 entry?

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

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