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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: mamejay on November 27, 2011, 10:11:33 AM

Title: Region Lock disable - Is a switch required?
Post by: mamejay on November 27, 2011, 10:11:33 AM: Hey guys,

I did a region mod on a JAP supergfx for a mate of mine. He got a pre-made PCB.
Got it installed and its working great. I disabled the lockout pin by grounding pin 29.

My mate is insisting that there needs to be a switch to enable the lockout for some of the JAP games.
Is this correct? I cannot find any information about and all my tests at home with about 20 hu-cards worked perfectly.
If it is correct does anyone have a list of games that require it?
Thanks
Title: Re: Region Lock disable - Is a switch required?
Post by: Duo_R on November 27, 2011, 12:11:55 PM: I think just a certain supergrafx game checks.
Title: Re: Region Lock disable - Is a switch required?
Post by: BlueBMW on November 27, 2011, 12:21:38 PM: I've heard of that issue, though I've never experienced it myself. The solution would be to just use a DPDT switch and use the second half of the switch to connect or ground the pin 29. Kind of a pain, but might be necessary for that one SGX game :P
Title: Re: Region Lock disable - Is a switch required?
Post by: mamejay on November 27, 2011, 12:32:21 PM: Cool. Will replace the SPDT with a DPDT switch and add the pin 29 and GND to the other legs of the US/JAP of the switch.
Title: Re: Region Lock disable - Is a switch required?
Post by: SignOfZeta on November 27, 2011, 02:03:06 PM: I think there is like...one specific game that f*cks up on one specific hardware config. Personally I've never run into problems with just permanently grounding it.
Title: Re: Region Lock disable - Is a switch required?
Post by: nat on November 27, 2011, 03:50:25 PM: It's Aldynes. Aldynes breaks if pin 29 is grounded.
Title: Re: Region Lock disable - Is a switch required?
Post by: SignOfZeta on November 27, 2011, 06:29:30 PM: But wasn't it even weirder than that? Like, it only breaks it if you have a SuperCDROM2 attached to your SGX?

Either way, one SGX game so...it only matters if you have a SGX.
Title: Re: Region Lock disable - Is a switch required?
Post by: Keith Courage on November 27, 2011, 09:11:04 PM: I heard there was some issue with space harrier and pin 29 on a super grafx before as well. Can anyone else confirm this?