Reactivating monitor with power saving

[GONZALO ESTIVARIZ]

How I can reactivate, under program control, a monitor that has enter in a power saving mode
without a keypress ?

Gonzalo

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[Mel Bishop]

You may want to try Int16h Function 05h. This simulates
a key press by inserting a character in the keyboard buffer.
CH = scancode of key and CL = ASCII code of key.



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[GONZALO ESTIVARIZ]

Mel: Thank you for your answer,I am trying to use call interrupt statement, but I don't know how to enter the function 05h.
Thanks.

Originally posted by GONZALO ESTIVARIZ:
How I can reactivate, under program control, a monitor that has enter in a power saving mode
without a keypress ?

Gonzalo

------------------

[GONZALO ESTIVARIZ]

Mel: I found that Function 05h must go in AH.
I wrote a little program, that simulates the "A" keystroke in a close loop with some delay.
It works fine (I can Inkey$ that letter) but the monitor won't wake up until I real input a key.
Do you have an idea why this happens ? it seems that the BIOS dont see this procedure..

Originally posted by GONZALO ESTIVARIZ:
Mel: Thank you for your answer,I am trying to use call interrupt statement, but I don't know how to enter the function 05h.
Thanks.

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[Mel Bishop]

Hi Gonzalo
I was afraid that would happen. Int16 is a software interrupt
and looks like the wakeup is triggered by a hardware interrupt.

There are some small programs that toggles things like CAPS
LOCK and NUM LOCK. $INLINE the program to perform a toggle and
see if that will wake up your monitor.

If that doesn't work, I'm all out of ideas.

I think I just accidently lied. (This is about an hour later).
if that doesn't work and IF you have your mouse driver loaded,
try one of the function of INT33 to do something with your
mouse.


Cheers
Mel


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[This message has been edited by Mel Bishop (edited November 29, 2000).]

[GONZALO ESTIVARIZ]

Hi Mel:
Thank you for your interest. Looking at the interrupt list, i tried calling int 09 and is working OK.
Again, thank you, you gave me the ideas where to look....
Gonzalo

Originally posted by Mel Bishop:
Hi Gonzalo
I was afraid that would happen. Int16 is a software interrupt
and looks like the wakeup is triggered by a hardware interrupt.

There are some small programs that toggles things like CAPS
LOCK and NUM LOCK. $INLINE the program to perform a toggle and
see if that will wake up your monitor.

If that doesn't work, I'm all out of ideas.

I think I just accidently lied. (This is about an hour later).
if that doesn't work and IF you have your mouse driver loaded,
try one of the function of INT33 to do something with your
mouse.


Cheers
Mel

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