Programming the system speaker?

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Metallic-Red

Programming the system speaker?

Post by Metallic-Red »

How do I program the built in system speaker? Is there a port I should be writing to? I am using NASM and I would prefer any code to be in 16 bit real mode. Any help is appreciated.
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Pype.Clicker
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Re:Programming the system speaker?

Post by Pype.Clicker »

basically, it uses one of the counter on the PIT to set a frequency and a gate somewhere (controlled through the PPI - 8255 or through the multi-purpose 8042 on AT computer) to enable/disable sound ouptut ...

http://www.programmershelp.co.uk/assy/SOUND.ASM might be of some help ...
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Metallic-Red

Re:Programming the system speaker?

Post by Metallic-Red »

Thanks. This is exactly what i'm looking for!
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