Hi All,

We've just noticed that if have a built in sound card but don't use it in Win'98 (therefore no soundcard speakers connected) when you send a "beep" the on board speaker provides a pathetic barely audible "click".

If we drop to a DOS shell and send "Echo ^G" you get the click

If we shutdown to DOS and send "Echo ^G" you get a "BEEP"

How can we get Windows to allow an audible beep to be heard from the on-board speaker.

P.S The sound card was turned off in the BIOS as well.

TIA

Claude

Have you tried using a *.wav file and our playwav.exe utility? Simply enable the sound card. Works fine from AREV. Pick your own *.wav file to suit.

You can oscillate the speaker from an RBASIC program (using the RBASIC OUT command), but CPU speed variations will vary the pitch, and it sounds quite poor in comparison to the quality and consistency of a *.wav file.

We send data to the speaker port from AREV for noises in our arcade game for AREV "memSpace Invaders".

The Sprezzatura Group

World Leaders in all things RevSoft

The thing is….

We don't actually want to connect speakers to the sound card due to space limitations. So the sound card stays off.

Also I don't really want to add RBasic code to what in effect works perfectly well when not in a Windows shell.

Is there some way at getting to windows or… a way to redirect any/all sounds to the onboard speaker?

Claude

Windows intercepts the bios call to the hardware on-board speaker and gives the asthmatic wheeze. Not easy to get around it without programming.

Wish I could give you a better answer.

Don Miller

C3 Inc.

Another piece of useless information for your archives

http://support.microsoft.com/support/kb/articles/Q138/8/57.asp?LN=EN-GB&SD=gn&FR=0

If you go to the above address you will find a Microsoft product called speak.exe which will play wav files through you pc speaker. It sounds crap but you can hear it, and that's all I was interested in…

Thanks for your comments

Claude

subroutine upset_all_neighbourhood_rottweilers(Param)

* Param is "on" or "off"

* this program addresses the speaker from AREV.

* clears all earwax within a four hundred foot radius.

convert @lower.case to @upper.case in Param

OUT 67, SEQ(\B6\)

OUT 66, SEQ(\90\)

OUT 66, SEQ(\00\)

OUT 97, 45

if Param=ON" then

OUT 67, SEQ(\B6\)

OUT 66, SEQ(\90\)

OUT 66, SEQ(\00\)

OUT 97, 45

OUT 97, 255

end

If you want something more audible and pleasant, try this beeper

routine -

subroutine beeper

* the duration is preset to 0.2 seconds here, but can be increased

* frequency is about 200 Hz

declare subroutine dostime

OUT 67, SEQ(\B6\)

OUT 66, SEQ(\6E\)

OUT 66, SEQ(\12\)

OUT 97, 45

OUT 67, SEQ(\B6\)

OUT 66, SEQ(\90\)

OUT 66, SEQ(\12\)

OUT 97, SEQ(\33\)

a=0

dostime(a)

loop

dostime(b)

while b The Sprezzatura Group[/url]

World Beepers in all things RevSoft

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