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imports:pc_engine [2019/08/27 20:45] (current)
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 +===== PC Engine Import Mod =====
 +When NEC created the PC Engine they weren'​t thinking about global domination. ​ In fact, given their half-assed efforts in the US and Europe, they never really did give it serious thought. ​ This means the '​protection'​ in their system is sort of weak, but also annoyingly two-phased.
  
 +**The theory:** The HuCard pinout is identical for US and JP games, except for the 8 data lines which are reversed (0-7 becomes 7-0).  This is a simple matter for an adaptor to fix, but there'​s one additional wrinkle: you need to set the region on Japanese consoles before American games will work, the adaptor alone is not enough. ​ The reverse is not the case: Japanese games don't check the system region, so they'​ll run fine on US systems with an adaptor.  ​
 +
 +So, if you have an adaptor and Japanese console, you need to mod the system before it'll work.  If you have an adaptor and American system, you're done, go play.
 +
 +**The fix:​** ​ On Japanese systems, connect pin 29 of the Hu6280 chip to GND.  That's it.
 +
 +==== The Details ====
 +This mod is dead easy to perform. The most difficult part is opening the unit. The Japanese Duo-R uses security-torx bits, and most other units (CoreGrafx, PCE, SuperGrafx) use [[http://​www.gamesx.com/​misctech/​gamebit.htm|GameBit]] screws. Once that's accomplished,​ simply look for the chip labelled **Hu6280**. ​
 +
 +{{ http://​www.gamesx.com/​grafx/​6280.gif }}
 +
 +On the board are some **white labels**, indicating the pin numbers. Now locate **pin 29** of this chip, and now comes the tricky bit.
 +
 +{{ http://​www.gamesx.com/​grafx/​6280b.gif }}
 +
 +Take a soldering iron and heat the base of pin 29, while **gently** prying up at it with a small jewelers screwdriver or x-acto knife. ​ You want to lift it off the board so that it sticks straight out.
 +
 +<box round warning|BE CAREFUL!>​Do not over-stress or bend this pin unecessarily!! ​ As I'm sure you've noticed, metal things will break if you wave them back and forth a lot. If this breaks, you're in deep trouble!!</​box>​
 +
 +Now, connect this pin to GND with a wire.  GND is easy to find, any metal shielding will be ground, all connectors will have at least one grounded pin, etc.  ​
 +
 +==== Pictures ====
 +
 +Here are some samples of mods on different hardware.
 +
 +{{ http://​www.gamesx.com/​grafx/​LT_import.jpg |PC Engine LT }}
 +
 +{{ http://​gamesx.com/​grafx/​TE-repair3-1.jpg |PC Engine GT }}
 +
 +----
 +Information for this mod was taken from the Turbolist homepage. ​ The original page is now offline. ​ Thanks to bt and DaveS and Joyce and all the others who pioneered the art of PC Engine hacking.
 
 imports/pc_engine.txt ยท Last modified: 2019/08/27 20:45 (external edit)
 
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