TRAM on Audigy

TRAM on Audigy

[p z oooo]

Hi,

I wanted to add support for TRAM on Audigy to emu10k1 driver.
I look (tryed) at OSS driver and found that TRAM is not working 
too. :-(

Then I use trial and error method and found how to setup TRAM on 
Audigy. I know how to read from and write to TRAM in EMU10k2 DSP 
program but not more.
Is there any documentation on using TRAM on Audigy, or am I only one 
(except Creative and Creative NDA signer) who know how to use TRAM on 
Audigy ???

I need more info on how is TRAM working on SB Live:
TANKMEMADDRREG_CLEAR - Clear tank memory
TANKMEMADDRREG_ALIGN - Align read or write relative to tank access
TANKMEMADDRREG_WRITE - Write to tank memory
TANKMEMADDRREG_READ - Read from tank memory

Please help

Peter Zubaj

PS: If no one knows more, I will make patch against current CVS and 
send it to this list. (mayby AC3 passthrough using TRAM will work 
too :-))


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Re: TRAM on Audigy

[James Courtier-Dutton]

p z oooo wrote:
> Hi,
> 
> I wanted to add support for TRAM on Audigy to emu10k1 driver.
> I look (tryed) at OSS driver and found that TRAM is not working 
> too. :-(
> 
> Then I use trial and error method and found how to setup TRAM on 
> Audigy. I know how to read from and write to TRAM in EMU10k2 DSP 
> program but not more.
> Is there any documentation on using TRAM on Audigy, or am I only one 
> (except Creative and Creative NDA signer) who know how to use TRAM on 
> Audigy ???
> 
> I need more info on how is TRAM working on SB Live:
> TANKMEMADDRREG_CLEAR - Clear tank memory
> TANKMEMADDRREG_ALIGN - Align read or write relative to tank access
> TANKMEMADDRREG_WRITE - Write to tank memory
> TANKMEMADDRREG_READ - Read from tank memory
> 
> Please help
> 
> Peter Zubaj
> 
> PS: If no one knows more, I will make patch against current CVS and 
> send it to this list. (mayby AC3 passthrough using TRAM will work 
> too :-))
> 
> 
I heard that one will not have to do TRAM AC3, one can just select a 
different interpolator (A special NULL interpolor). I have not tested my 
self, but I saw emails about it about 1 year ago.
I think that it is just old SB Live cards that need the TRAM method.
Cheers
James




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Re: TRAM on Audigy

[p z oooo]

I know about this, but for me is simpler to add 20 DSP instruction 
than change 100 lines of driver code.

ALSA emu10k1 driver uses only TRAM for AC3 passthrough, other method 
is not implemented.

And I don't need (I don't have receiver) AC3 passthrough (this will 
by bonus for others), what I need is working TRAM on Audigy.

Peter Zubaj
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Re: TRAM on Audigy

[Takashi Iwai]

At Mon, 7 Jul 2003 12:42:13 +0200,
p z oooo wrote:
> 
> I know about this, but for me is simpler to add 20 DSP instruction 
> than change 100 lines of driver code.
 
i think the pass-thru on audigy can be implemented more easily without
using TRAM.  it doesn't need any change of driver codes, but only a
new DSP routing, i guess.

> ALSA emu10k1 driver uses only TRAM for AC3 passthrough, other method 
> is not implemented.
> 
> And I don't need (I don't have receiver) AC3 passthrough (this will 
> by bonus for others), what I need is working TRAM on Audigy.

yeah, of course, it would be great if we support TRAM generally :)

BTW, i've never heard/seen the info of TRAM on audigy, too.
so, i believe there is no official information about that yet.


Takashi


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