Programming the unknow P16v chip on the Audigy2

Programming the unknow P16v chip on the Audigy2

[James Courtier-Dutton]

The Audigy2 has lots of registers for the emu10k2 chip.
These are accessed by programming
#define PTR 0x00  /* Indexed register set pointer register        */
                   /* NOTE: The CHANNELNUM and ADDRESS words can   */
                   /* be modified independently of each other.     */
#define DATA 0x04 /* Indexed register set data register           */

Basically, one writes the register address to PTR, and then read or 
write to DATA.

On the Audigy2 there is a similar setup for 0x20 and 0x24. I suspect 
that this is used to program the p16v chip.

Had anyone looked into those registers, and tried to guess what they do ?

I might give it a go, once I finish the Audigy LS driver.

Cheers
James


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Re: Programming the unknow P16v chip on the Audigy2

[Thomas Witzel]

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On Friday 28 May 2004 01:49 pm, James Courtier-Dutton wrote:
> Basically, one writes the register address to PTR, and then read or
> write to DATA.
>
> On the Audigy2 there is a similar setup for 0x20 and 0x24. I suspect
> that this is used to program the p16v chip.
I guess that is correct. 
> Had anyone looked into those registers, and tried to guess what they do ?
With virtually no information this would be difficult. It seems like that 
playback over the P16V would be an easier goal than getting the inputs
to work, but I have no idea how to make a PCM extension for the P16V.
The routing diagram shown on the kX webpage indicates that there should be 
direct playback not using the 10k2 at all. They have made a special effects 
module which allows input coming through the P16V to be routed into the 10k2,
but normally there doesn't seem to be a connection.

												Thomas

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