HOW do we tell the "on board sound card" that computer memory XXX is talking to it!
many thanks
esdel

If it doesn't know already it probably never will.
You might rephrase the query.

How do we get the content of memory location xxx sent to the motherboard sound?

Not "turn it on"
Get it to listen to what WE are saying!

Unless you're into re-writing your OS code it's mission impossible. This is NOT a hardware issue. What sound byte that goes to the sound card is determined by the OS, hardware, and the apps available to play it.
Lastly, you wanna get SNOTTY it's best you take your business somewhere else like some other site.

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