Need help with SONY DUAL SHOCK pcb wiring

[Payback]

I'm going to be building my first stick and will need assistance on a few things.

I've been told to use a ps1 dual shock pad for better compabililty with PSX-to-DC converters so i went out and bought me a sony psone dual shock pad.

My question is:

Do I need to have a dedicated analog/digital button like the ones found on MAS joysticks?
If the answer is yes, can someone link me to a wiring diagram which shows me where i have to solder the analog soldering point to? 
And if the answer is no does it mean that i can simply disregard the analog soldering point?

This tutorial is quite helpful but it doesn't say what do what/where to solder the analog soldering point to or what to do with it.


Thanks

[TalkingOctopus]

First, I'd say no you don't need an analog button.  I have hacked digital ps1 pads that work fine with the DC adaptors. 

However, if you want one, It's the same as any other button.  Solder to the area underneath the button that isn't connected to the ground.

[Payback]

Thanks for replying

Have you ever hacked a dual shock pad?

[Dave_K.]

http://home.comcast.net/~spiffyshoes/DualShockHack/

[Payback]

Thanks for the link but it doesn't really answer my question

What i want to know is if the "analog soldering point" is needed for optinal compatibility
with controller converters

[TalkingOctopus]

Thanks for replying

Have you ever hacked a dual shock pad?

Yes.  I've hacked exactly one dual shock before.  It is not like the dual shock in the wireless hack posted above.  I was able to solder directly to the board.  In the tutorial dave posted, the analog button can be accessed by the wire in the middle of the ribbon cable.  Check the labels in the last picture

I really don't think you need an analog button.  I have been using my ps2 with my arcade for 2 years now and I've had no problems with the games I play.  I only play ps2 games that map well to arcade controls like fighters, shmups and other arcade ports like metal slug.