[Midibox AY 3 8912... ]

[nILS]

Yay :-)

[vedge]

Hi

I also have 9 AY 3 8910 units that are sitting in a tube, so it might come in handy.

[jackies]

This is sweet!

I have one AY 3 8912 laying around somewhere...

May the 8 bit force be with you!!!

[lemonhorse]

Just to inform you: Mike is on vacation till the end of this week. So there is a little delay of the AY 3 8912 board.

Hardware Update:

MIDIBox AY 3 8912 Mixer > Added a MASTER VOLUME POT:

==> http://www.midibox.org/dokuwiki/midibox_ay_3_8912_mixer

[lemonhorse]

got a mail from mike today - he told me that the two AY 3 8912 test boards are almost on the way.

[lemonhorse]

Thanks to nILS and PCB Mike!

Here is the AY 3 8912 BOARD (V1.0)  => http://www.midibox.org/dokuwiki/midibox_ay_3_8912_board

:)

[Theta_Frost]

Yeaaaaa! :D  Good job lemonhorse!  I can't wait till I'm rocking my 8-bit symphony with this, SID, and POKEY!  So cool! :)

also any idea when I might be able to get my hands on some of these boards?

[nILS]

mmmm wiki page...

[lemonhorse]

any idea when I might be able to get my hands on some of these boards?

I hope soon. In my view there is a little issue with the A, B and C Pad size.

But when the board is available I will post it here of course.

[Theta_Frost]

cool, I will for sure make this sometime in the future!

[Theta_Frost]

Hey lemonhorse can you post the parts list for the AY board?  I'm gonna try a vero one and it would be nice to know! ;D

[lemonhorse]

Hey lemonhorse can you post the parts list for the AY board?

http://www.midibox.org/dokuwiki/midibox_ay_3_8912_board updated (Parts List). 

Here is a Picture of my Prototype ;D :

[Theta_Frost]

wow thanks! :D

[nILS]

My AY-3-8912 says to say "bleep bleep bloop"  ;D

edit: Actually, why doesn't he just say "hi" himself... ;-) Admittedly you can only get so far with random values in the registers but hey - it's a sign of life. Oh yeah, and ignore the -30db noisefloor it's not from the AY which is amazingly quiet but from my soundcard...

ay.mp3

[buhler]

oh nILS, always one step ahead of the game! ;D.... 

[lemonhorse]

Update:

* MIDIBox AY 3 8912 - V0.03: There is a new VELOCITY MENU (Switch Velocity to to Volume Tone A, B, C and Noise Period) [Press F7]

  => Software Download: http://www.midibox.org/dokuwiki/midibox_ay_3_8912

* MIDIBox AY 3 8912 Board >> PCB Layout pdf File for download:

=> http://www.midibox.org/dokuwiki/midibox_ay_3_8912_board

Greetings,

- Lemonhorse

[nILS]

Since lemonhorse asked me to take some pics of my AY and I miserably failed to do that so far, here's a little compensation :-)

Little mbAY-3-8912 Demo

Drums are VSTi, added a some reverb and delay to hide the noise of my soundcard ;-)

[buhler]

that's great! ;D  i just need to find a PSU for this and my MBFM... :'(  i have the boards and such done i am just having a serious problem figuring out the PSU situation.  the same PSU would work for both wouldn't they?

[nILS]

You can easily leave out the opamp buffer board for testing. Just connect all three outputs via 10k resistors and add a pulldown of 1k-5k from that signal to ground.

[lemonhorse]

the same PSU would work for both wouldn't they?

yes.

[lemonhorse]

You can easily leave out the opamp buffer board for testing. Just connect all three outputs via 10k resistors and add a pulldown of 1k-5k from that signal to ground.

        10k
(A) ---[===]-----+
                 |
        10k      |     1k-5k
(B) ---[===]-----+-----[===]---+
                 |             |
        10k      |           -----
(C) ---[===]-----+             -

This way?

[nILS]

        10k
(A) ---[===]-----+--------------->> OUTPUT
                 |
        10k      |         
(B) ---[===]-----+
                 |               
        10k      |     1k-5k         
(C) ---[===]-----+-----[===]---.
                               |
                              ---
                               - 
[/code]
 
Like this, yeah :-)

[lemonhorse]

...any idea when I might be able to get my hands on some of these boards?

The AY 3 8912 PCB  and the AY 3 8912 OP-Mixer PCB are now available at Mikes Onlineshop! 

http://www.mikes-elektronikseite.de/shop_englisch/index.htm

:-)

[nILS]

:D

[Smithy]

:D

;D <= Is what my face looks like right now.

its great to see it alive and breathing in an etched PCB.  :)