Re: Vaxstation 4000 sound support

[Dave McGuire <mcguire%neurotica.com@localhost>]

  Hey, this is very cool!  I've really gotta fire up some of my
VAXstations soon. :-)

            -Dave

On 12/18/2014 05:57 PM, Björn Johannesson wrote:
> Hello again list.
> 
> Want to listen to some sweet phone quality tunes when playing with your new
> framebuffer driver?
> I noticed that openbsd had vsbus attachment for the am7930 audio on the
> vaxstations. I did a quick port of it. (I don't know what I'm doing here
> so don't be too harsh)
> Thanks to tnn@ and kapu on #netbsd (ircnet) for help.
> 
> Here is a GENERIC kernel (7.99.1) with sound support
> http://2.248.109.164/netbsd.vsaudio.bin
> 
> You will have to make audio devices since there are none in /dev.
> Audio device major is 99.
> # cd /dev;mknod sound0 c 99 0;mknod mixer0 c 99 16;mknod audioctl0 c 99 192;mknod audio0 c 99 128
> 
> VLC-users will need to change the output with
> mixerctl -w monitor.output=headphones
> For speaker I used a handset from a phone. :)
> Tried recording with it and it worked fine too.
> 
> If you don't have a suitable au-file get
> http://2.248.109.164/sample.au (warning LOUD!)
> 
> Play!
> $ audioplay sample.au
> 
> 
> Compiling is a bit more involved:
> Get
> http://2.248.109.164/vsaudio.c
> and put it in arch/vax/vsa
> 
> Add audio to conf/majors.vax
> device-major    audio           char 99                 audio
> I chose 99 just because the last (nsmb) was 98.
> 
> Add vsaudio to conf/files.vax
> # Vaxstation 4000 audio
> device  vsaudio: audiobus, am7930
> attach  vsaudio at vsbus
> file    arch/vax/vsa/vsaudio.c          vsaudio needs-flag
> 
> Add sound to your kernel config
> vsaudio0        at vsbus0 csr 0x200d0000 # VS4000/60 (or VLC) audio
> vsaudio0        at vsbus0 csr 0x26800000 # VS4000/90 audio
> audio*          at audiobus?
> 
> Now comes the yucky part...
> The MI am7930 driver includes machine/autoconf.h which NetBSD/vax does
> not have.
> To get past this I just did "touch arch/vax/include/autoconf.h"
> I don't know what the correct way to fix this is.
> 
> Remember to re-run config! 
> Compile and boot.
> Make sure you have made the proper device files.
> 
> Now you can convert your entire music collections to 8KHz mono. :P
> 
> I would like to hear yay/nay from owners of /60 /90 and /90A machines.
> Does it work?
> 
> How do you check if the event counters are working?
> 
> /Björn
> 


-- 
Dave McGuire, AK4HZ/3
New Kensington, PA