Turbografx Controller pinout

[duo_r]

Hi,

question about this diagram:



Is that pinout for the 74HC163 or 74HC173? The paragraph talks about both the 163 and 173 chip. Were these both rapid fire chips, and are the pinouts identical?

Now something odd we've discovered: the console pin #7 goes to the Enable line of the 74LS157 chip, and also to the clock line of the 74HC163 (rapid fire) chip. Seems the 74HC163 chip is being used for autofire, and every time the system checks the controller, the '163 is incremented. Every 4th and 8th check the chip 'pulses' the fire buttons, allowing for two different speeds of autofire. 
  The TurboGrafx controllers (not the original PC-Engine controllers however) included turbofire - a pretty unusual option at the time. NEC added another chip to the controller (a 74HC173) to control the rapid-fire. The chip would theoretically allow for four speeds of rapid-fire, although only two were used. As you can see, only a few pins were used. Both the Fast and Slow outputs apply to both I and II buttons. 

[NFG]

That's a typo, it's a '163.

[duo_r]

k, one more thing Lawrence, I noticed on your pinout that pins 13 and 12 are the Fast and Slow lines. However, looking at the PCB of the Avenue 6 I see that it looks like it is pins 14 and 13. Did these change on the Avenue 6? I haven't had a chance to check a standard controller yet.

[NFG]

k, one more thing Lawrence, I noticed on your pinout that pins 13 and 12 are the Fast and Slow lines. However, looking at the PCB of the Avenue 6 I see that it looks like it is pins 14 and 13. Did these change on the Avenue 6? I haven't had a chance to check a standard controller yet.

I just checked a pad, and I wasn't wrong: the regular PCE pad used pins 12 and 13. 

[duo_r]

ok - personally confirmed the pinouts are correct since I hacked another NES controller, and this time added the turbo functionality. I wired exactly to pinout, and it worked prefectly (yeah yeah no surprise). The next step is to tackle a SNES to Avenue 6 mod, although I am not sure why the 163 uses different pins for that installation...

[duo_r]

Here is a picture of the controller, a Sansui SSS converted to work on the Turbo Duo. It features a stereo jack built into the controller which is fed inside the controller cable to a D-sub hood, from there you can plug that into the Duo headphone jack.

Bascially - a Duo controller that allows you to plug your headphones into and enjoy full-stereo sound (the original Sansui did was mono sound). Oh and it has a 6 ft cable length and functional turbo switches.