E-mu 1212M/1820M/1616M development

E-mu 1212M/1820M/1616M development

[Ctirad Fertr]

Hello,

I just bought an 1616M PCMCIA in addition to my old 1212m v1 and want to 
help improve the current driver. I wrote one little patch for those 
cards in the past (and some bigger patches for my experiments which were 
never released) and now I have some time to continue.

I'm going to add missing switches into mixer, make some changes in mixer 
to match the real I/O setup of each particular card model and perhaps 
also write some graphics patchmix like app.

Unfortunatelly, I'm unable to fix the most important bugs (at least from 
my point of view) dua to lack of documentation and knowlenge of DSP 
programming. These are:

1. non working 24bit playback. It should be on device 0,2 This device 
exists, but cannot be openned for playback.It is the last thing needed 
for serious DAW.

2. Non working S/PDIF (and probably ADAT, too) on 1616(M) microdock 
ports. I think tese ports uses different set of registers than PCI 1010 
host card. Am I right?

3. Midi I/O works well on 1212m v1, but only when 48kHz is set. At 
44.1kHz signalling is corrupted (different UART timing? How to fix it?). 
On 1616m microdock MIDI I/O does not work at all.

I welcome any comments, advices and patches ;)

----
Ctirad

Re: E-mu 1212M/1820M/1616M development

[James Courtier-Dutton]

Ctirad Fertr wrote:
> Hello,
>
> I just bought an 1616M PCMCIA in addition to my old 1212m v1 and want to 
> help improve the current driver. I wrote one little patch for those 
> cards in the past (and some bigger patches for my experiments which were 
> never released) and now I have some time to continue.
>
> I'm going to add missing switches into mixer, make some changes in mixer 
> to match the real I/O setup of each particular card model and perhaps 
> also write some graphics patchmix like app.
>   
A graphics patchmix like app would be the most useful at the moment. It 
would permit us to enable the 96kHz and 192kHz options, as for these 
different DSP code needs to be loaded, and that is best left to userland.

> Unfortunatelly, I'm unable to fix the most important bugs (at least from 
> my point of view) dua to lack of documentation and knowlenge of DSP 
> programming. These are:
>
> 1. non working 24bit playback. It should be on device 0,2 This device 
> exists, but cannot be openned for playback.It is the last thing needed 
> for serious DAW.
>   
I will look into this. Please raise a bug on alsa-project.org so we 
don't forget this.

> 2. Non working S/PDIF (and probably ADAT, too) on 1616(M) microdock 
> ports. I think tese ports uses different set of registers than PCI 1010 
> host card. Am I right?
>   
Correct, they are different. I will try to update the driver with some 
details tomorrow.
> 3. Midi I/O works well on 1212m v1, but only when 48kHz is set. At 
> 44.1kHz signalling is corrupted (different UART timing? How to fix it?). 
> On 1616m microdock MIDI I/O does not work at all.
>   
There is no mention in the docs regarding the clock rates affecting MIDI 
at all.
I think this might be a trial and error fix.
There is an extra register for midi routing config on the 1616m, so I 
might have to get that sorted.
> I welcome any comments, advices and patches ;)
>
> ----
> Ctirad
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>   

Re: E-mu 1212M/1820M/1616M development

[James Courtier-Dutton]

James Courtier-Dutton wrote:
>
>> 2. Non working S/PDIF (and probably ADAT, too) on 1616(M) microdock 
>> ports. I think tese ports uses different set of registers than PCI 
>> 1010 host card. Am I right?
>>   
> Correct, they are different. I will try to update the driver with some 
> details tomorrow.
Comments added into hg repository, in emu10k1.h
alsa changeset: 5529

Re: E-mu 1212M/1820M/1616M development

[Ctirad Fertr]

Dne Monday 12 of November 2007 23:35:49 James Courtier-Dutton napsal(a):
> Comments added into hg repository, in emu10k1.h
> alsa changeset: 5529

Thanks. It helped a lot. After quick hack I can use S/PDIF on microdock :) Now 
I'm thinking about an elegant way how to handle different mixer schemes in 
emumixer. Any ideas?  

---
Ctirad

E-mu 1212M ADAT channels missing ?

[Kenneth Long]

Hi,

I'm using qjackctl to launch jackd and before, I would
see the PCM channels appear under "Connect" button.
Alsa_pcm only shows two channels "capture_1 and
capture_2. Before there were 16 channels... 

I no longer see the ADAT channels. 
I'm doing the same things I did before. 
what happened?  
The channels are setup in alsamixer under
-V capture as well as  -V playback

I'm not able to pull the latest alsa drivers down
right now to see if that changes anything.. 

thanks 
Ken



hello

Re: E-mu 1212M ADAT channels missing ?

[Ctirad Fertr]

Dne Sunday 18 of November 2007 05:54:37 Kenneth Long napsal(a):
> I'm using qjackctl to launch jackd and before, I would
> see the PCM channels appear under "Connect" button.
> Alsa_pcm only shows two channels "capture_1 and
> capture_2. Before there were 16 channels...

Do you use correct capture device in qjackctl? The correct device for 
multichannel capture is 0,2 (in case your card is 0). 

------
Ctirad