@Jack

Can you turn off AHI debugging please, reboot and try again? That may seem strange, but thrust me on that one.

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@DaveAE

I have the chip, but no sound.
Oh well, will wait for next upload.
You appear to have enough debug info in this forum so will not clog it up with more.
Thanks for the work.

Cheers,
Tim

@DaveAE

A general question:
Is the new init functionality (that initializes the specific part of the VIA southbridge you mentioned) incorporated in the driver, or will it be integrated into U-boot? I'm asking, because it would also helpful for AmigaOne Linux users, if U-boot would be reworked to initialize the VIA southbridge.

Thanks!

_________________
A1SE: G3@600MHz, 2GB, 1GBit network card
A1XE: G4@933MHz, 2GB, refitted AC'97 codec
microA1: G3@800MHz, 1GB

- A1 Linux support -

There are several socket adapter /converter for SMD.
Is it possible to use the adapters with the AC97 IC and A1 board?

Wellscti

Enplas

Emulation and Solutions

@Geri

It will be in a next U-boot for that reason, but it's in the driver too.

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@DaveAE

Quote:

I'm 99.9% sure you can just put ANY AC'97 v2.3 chip on there from any brand. That is, if you know of a way to solder it on the board. They are supposed to be pin-compatible, after all, AC'97 is a standard.

I'll have to agree with this. From digging through some other codec data sheets and looking at Intel's AC97 rev 2.3 specs (oldest I could find) available here, the newer specs are even backwards compatible with the older 2.1 spec that the Sigmatel chip is built to. Looking at this page at Analog Devices shows several suitable substitutes. And they aren't that expensive!

After looking back at the Sigmatel datasheet, the STAC9752T is actually AC97 rev 2.3 compliant, so even newer chips could be used from that page. I saw several priced at only about $3-$5 each from the looks of it. Also, you might be able to get samples from them! All direct on their website.

There are probably others. This is what I found after about 10 minutes of Googling.

Dave, you are right in that if the manufacturer claims it meets the AC97 codec standard, another chip that meets the same standard should be a drop-in replacement for it. One would just have to be careful to select a chip that is rated at the same voltage (the STAC9752 is a 5 volt part), and it should work.

Dave, do you know if putting in another chip, even though they are pin and register compatible due to the standard, would you have to make any driver changes to make anything other than the Sigmatel chip work?

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@DaveAE
Quote:

It will be in a next U-boot for that reason, but it's in the driver too.

There may be an interesting side effect from this. I could never get any of the 686B's power management stuff (temp monitoring, CPU throttle, etc) to work on the A1 and don't know of anyone else who did either, even using code that worked fine on an x86 system. But that functionality is tied in with ACPI, so perhaps this will make it finally work.

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Quote:

Dave, do you know if putting in another chip, even though they are pin and register compatible due to the standard, would you have to make any driver changes to make anything other than the Sigmatel chip work?

Well, just make sure it supports VRA (variable sample rate) and has rev 2.3, then I'm pretty sure it will just work.

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@Wolfman

I agree. It should be possible to use another AC97 codec. This one seems to be a replacement for the SigmaTel IC:

AD1981B AC '97 2.3 Compliant CODEC, 2 Channels of Audio with SPDIF

(atleast they should have the same features; I didn't compare the pin I/O, but the package is the same)

_________________
A1SE: G3@600MHz, 2GB, 1GBit network card
A1XE: G4@933MHz, 2GB, refitted AC'97 codec
microA1: G3@800MHz, 1GB

- A1 Linux support -

@DaveAE

When speaking of it...yes, the modes for the onboard soundchip
showed up. Why? If it means that i DO have the chip, how do
i make it to work? I have a 5.1 HIFI-equipment. It's previously
connected to my SB Live! 5.1 PCI-soundcard in the green connector
on the rear of it...

Important

Heh, yeah, now I remember what I did yesterday. I put the latest driver in a certain directory, but forgot to make a new lha out of it, so I uploaded one that I made before, but that one always fails with 'no date for card'. Sorry! Will fix tomorrow. Don't despair yet, if it doesn't work!

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@helgis

Just wait for tomorrow evening, sorry for the trouble.

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http://www.audio-evolution.com

@DaveAE

I experienced the exact problem as @Jack has...

I got it on the AHI Prefs, but can't play the Test sound...

Quote:

s the new init functionality (that initializes the specific part of the VIA southbridge you mentioned) incorporated in the driver, or will it be integrated into U-boot?

A new uboot with said features is being tested as we speak.

@DaveAE

No problem, Mr.MusicMan I try it tomorrow This's sure interesting!

@DrBombcrater

That would be good, if things like temperature or voltage monitoring would work then on the AmigaOne motherboard, too! But are there any temperature sensors on the board (like a LM75), or are they integrated into the VIA southbridge?

@AV

Perfect!

_________________
A1SE: G3@600MHz, 2GB, 1GBit network card
A1XE: G4@933MHz, 2GB, refitted AC'97 codec
microA1: G3@800MHz, 1GB

- A1 Linux support -

I did some research. The Analog Devices IC (AD1981B) is more or less compatbile. It has a different pin assignment for the following pins:

SigmaTel -> Analog Devices
VIDEO_IN R/L -> Jack sensing 1/2 (not used at all on AmigaOne motherboard, only a cap connected)
PCBEEP_IN -> N/A (seems to be used, but who cares Well, AFAIK the PC speaker works under Linux so I don't think it needs the AC97 codec, right?)
GPIO1/2 -> AVDD/AVSS (not used on AmigaOne and not connected)
CAP2/NC -> AFILT3/4 (not yet verified)

The operating voltage is the same for both ICs (3.3V digital and 5V analog).

_________________
A1SE: G3@600MHz, 2GB, 1GBit network card
A1XE: G4@933MHz, 2GB, refitted AC'97 codec
microA1: G3@800MHz, 1GB

- A1 Linux support -

@Rob

Well, Eyetech had to take it out. People were complaining that they were paying for something that wasn't there. So due to public pressure the chips were taken off the later batches.

In a few months time I'm sure someone will have the full list of missing components, sell kits and even solder up for a beer or two at various shows like BB4 or AmiGBG 2006

I have codecs (even though they aren't from sigmatel, but AC'97 is AC'97, up to a certain point at least), and I have the skills. Anyone wanna be friends with me?

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@olegil

Well, there is only the AC97 codec IC missing, all the other parts (caps and the sockets for the audio I/O) are still there.

If I may ask, what's the part number or the manufacturer of your codec ICs?

_________________
A1SE: G3@600MHz, 2GB, 1GBit network card
A1XE: G4@933MHz, 2GB, refitted AC'97 codec
microA1: G3@800MHz, 1GB

- A1 Linux support -

@DaveAE:
Here is the output after reboot:

SB128 found!
SB128: Device = 0, Vendor = 5880, Revision = 0
SB128: Did AC97 reset.
SB128: Did SRC wipe.
SB128: Did SRC init.
SB128: Did RATE init.
SB128: Did VOLUME init.
SB128: AC97 capabilities = 0
SB128: AC97_VENDOR_ID0 = 0
SB128: AC97_VENDOR_ID1 = 0
ERROR: NO CARDS FOUND!
VIA 686B function 5 DriverInit
VIA 686B function 5 found!
Couldn't power up VIA!
Unable to initialize Card subsystem.exit init

Edit:
didn't c the note about wrong upload (reading the thread in fifo mode) so it might be irrelevant
/Edit


Jack

Last edited by jack on 26-Oct-2005 at 04:12 PM.

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"the expression, 'atonal music,' is most unfortunate--it is on a par with calling flying 'the art of not falling,' or swimming 'the art of not drowning.'. A. Schoenberg