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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: Ergot_Cholera on June 24, 2015, 11:40:20 PM
Title: Pin/leg 29 clarification
Post by: Ergot_Cholera on June 24, 2015, 11:40:20 PM
I am doing a region mod on a Core Grafx. I know that on Duo/R you can just bridge pin 29 and 30 (which is connected to ground) without lifting, but on a core Grafx is it necessary to lift pin 29 and connect to ground or can it be connected without lifting? I have done this before, but I hate lifting delicate chip legs.
Title: Re: Pin/leg 29 clarification
Post by: mickcris on June 25, 2015, 07:36:13 AM
GameTechUS had a video where he said it doesn't go anywhere on a CG2 so no need to lift it. I assume a CG would be the same. cant get the link to work right, but start at 3m2s Pin 30 is not ground though he said.
Title: Re: Pin/leg 29 clarification
Post by: Ergot_Cholera on June 25, 2015, 08:14:43 AM
Thanks for your fast response. GameTechUS knows what he is talking about and Core Grafx I and II are identical inside, so I'm glad I don't have to lift that leg.
Title: Re: Pin/leg 29 clarification
Post by: thesteve on June 25, 2015, 01:00:26 PM
note that pin 30 goes to the exp bus, as its only grounded when the CD system is present
Title: Re: Pin/leg 29 clarification
Post by: mickcris on June 25, 2015, 01:02:30 PM