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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: cpsystem3 on August 17, 2010, 04:20:51 AM

Title: PC Engine Controller Hacks
Post by: cpsystem3 on August 17, 2010, 04:20:51 AM

Hi everyone- I made a controller mod PCB just like the one posted below last night:

http://www.mmmonkey.co.uk/console/pce/pad.htm

I built the circuit, verified all wiring and PCB connections and everything is perfect, however it doesn't work right. The right direction is always activated, and when I press right, it activates button II. I did notice that when I disconnect wire #3 from the Din8 cable, the issue goes away (but right and button II dont' work at all). Any idea what is going on? Is it possible my issue is because I used a 74LS157B chip instead of a 74LS157 (accidently ordered the 'B' type, not sure whats different).

Please help! The mod came out visually amazing, however its not usable yet  :(

Ultimately this is so I can play my PC Engine on an arcade cab... video and audio are already working perfect, just sorting out controls.

Title: Re: PC Engine Controller Hacks
Post by: hoobs88 on August 17, 2010, 06:17:46 AM

These sites might be able to help you. Although I suspect it is probably because you have the 'B' version of the chip.

http://gamesx.com/
http://moddedbybacteria.wordpress.com/

Title: Re: PC Engine Controller Hacks
Post by: cpsystem3 on August 20, 2010, 12:53:42 PM

Well that sucks. The chips I got are indeed good, I swapped it into an official controller and it works just fine. I even tried using the IC out of a PC Engine controller, and got the same results. The schematic is bad, however I can't quite figure out exactly what is bad.

Unfortunately I only have turbo-fire controllers and its a bit hard for me to discern what resistors/caps are needed just to support rapid fire. There are a handful more resistors than shown on the schematic, and 3 caps in an official controller (1 electrolytic and 2 ceramic discs). Does anybody have a non-turbo fire PC engine controller? I would really appreciate a scan of the PCB, and possibly the value of a few of the resistors installed on the board. I know I can fix the schematic up with a little assistance...

Title: Re: PC Engine Controller Hacks
Post by: hoobs88 on August 20, 2010, 05:36:29 PM

You need 74LS163 chip for rapid fire.

Title: Re: PC Engine Controller Hacks
Post by: Duo_R on October 15, 2010, 08:25:28 PM

Did you ever get it working? Here is a document that might help you.


http://www.megaupload.com/?d=L5J7BKBG


(http://img243.imageshack.us/img243/5641/img0201uz9.th.html) (http://img243.imageshack.us/i/img0201uz9.jpg/)

Uploaded with ImageShack.us (http://imageshack.us/)

(http://img264.imageshack.us/img264/5599/img0593gi1.html) (http://img264.imageshack.us/img264/5599/img0593gi1.jpg/)

Uploaded with ImageShack.us (http://imageshack.us/)