chipmusic.org is an online community in respect and relation to chip music, art and its parallels.
You are not logged in. Please login or register.
Hi guys,
So I've been getting me some gameboys and a link cable. I was lucky to buy 2 nanoloops 1.5 a couple of years ago and forgot about it till now. But i'm having a problem with one of my DMG's when I plug in the link cable in both dmg's the d-pad stops working on one of the gameboys. When I apply some presure on the connector it works fine.
Any idea's what the problem is here ? I have 4 gameboys laying around and 2 of them are having the problem
When you put pressure on the link port? It must be link port pin 4 which connects to the CPU's P14. This directly controls the dpad inputs:
http://gbdev.gg8.se/wiki/articles/DMG_Schematics
Your link cable must be connecting this pin to something it shouldn't be. I suggest actually removing the wire on pin 4 from your cables if it is present. Can you open one of your cables and find out?
When you put pressure on the link port? It must be link port pin 4 which connects to the CPU's P14. This directly controls the dpad inputs:
http://gbdev.gg8.se/wiki/articles/DMG_SchematicsYour link cable must be connecting this pin to something it shouldn't be. I suggest actually removing the wire on pin 4 from your cables if it is present. Can you open one of your cables and find out?
Yeah if I plug everything in, all works fine except the dpad, then when I lift the plug from the cable a bit up or down, or when I just put my finger on it and apply some pressure the dpad starts working. So problem would be inside the cable then ? Not my dmg's ?
No, the DMG is fine. The cable is bridging the 4th pin in the link port to something which disables the dpad.
It is a function of the dmg to have this pin controlled over the link port, but I can't think of any official or even homebrew application that utilizes it. Whatever cable you've bought must for some reason have this wire present.
I so opened the cable and there seems to be no cable running from PIN 4. I noticed that it now restarts the DMG when wiggling the cable. This only happens with 2 of my dmg's other 2 are fine...
Maybe something inside is shorting when link port is bent or something like that ... any idea's ?