nes max turbo controller

[cl08]

i bought a max controller to hackup for my NESp and I cant find anything on it. Anybody got any pinouts pics or diagrams thoughts whatever you think can help me getting it running

thanks guys

cody

[cl08]

almost 100 views and no help

[Mister X]

I'd ASSUME that it's a standard NES pad, as far as the chip pinout goes, and what, the turbo buttons go through a frequency divider so they're only active every X number of clock pulse?

SIGH. I guess I'll take mine apart.

Trace side of the board.


Component side.


The LC4969 is a triple inverter. Discontinued in 1986, I think.
Datasheet available from: http://www.datasheetarchive.com/preview/3965959.html

The M4021BP is an 8 bit shift register, basically the main chip for the controller. I forget if this is the same chip as what is in the default NES pad. Still, it takes parallel input from the buttons, and shoots everything out to the NES serially, SOP for NES gamepads.

[Rekarp]

Yes the 4021 is the main IC for the NES controllers. I know Ti and a couple of other companies still make erm.

If you wanted to get creative on the Turbo buttons since that chip is discontinued is you can probably use a 555 timer or something similar. Would be a crude solution but it would work.

[Mister X]

you can probably use a 555 timer or something similar. Would be a crude solution but it would work.

Well, you're already getting a clock pulse from the NES, so you could just use a cheap flip flop IC to halve the pulse rate... which would make the NES see the button as being pressed every other clock pulse. That may be too rapid to work, though.

Bleh, just thinking out loud.

[cl08]

Thanks guys, this helps. I started last night working on the controller. im going to take my time and try my best just to use what was used in the cotriller itself.