I'm trying to make an NES with a famicom slot. I've been soldering the cable and the slot following the pinout sheet. But I dont get any boot from the famicom game obviously something is wrong. I put some pics of the project maybe i got the orientation of the cart wrong according to this (http://wiki.nesdev.com/w/index.php/Cartridge_connector) the nes pins runs from left to right 36 to 1 label side and 72 to 37 back side, 37 in the same position as 1. The famicom run left to right 1 to 30 en the label side and 31 to 60 back, 31 in the same position as 1. I really dont now what the hell is wrong the NES boot normal. Here is the pic.
Double check the wiring, look for any bridged solder or crossed over wire. Also make sure that you plugged the cart the right side up as if you plugged it in upside down, nothing will work.
I finally found the boot problem it was that the famicom 30 and 31 pin has to be solder together in nes pin 36 for the +5 volts also famicom 1 and 16 on nes pin 1 for the ground.
Where did you get the 60 pin zif slot(don't remember the pin counts of other 80's hardware), and do they sell 72 pins by chance also? I was going to use floppy connectors, but I like the less ghetto look.
you can find slots from nintendo to sega in http://www.tototek.com/store/index.php, but I haven't found any place that sells the 72 pin top loader slot. If you find a place please let me know I want to make a hybrid top loader nes too.
I am wanting to do this mod also but I have a few questions if I may For the Famicom's audio pins 45 and 46 what do I do with those? Leave them hanging or connect them somewhere on the NES? Also for the remaining pins on the NES (EXP, System CLK and CIC pins) do I just leave these ones hanging? Can't wait to get started on this one! Thanks
Mamejay this pdf help me a lot, just solder following this pinout. The only thing is the pins I mentioned above the famicom pins 30 and 31 both go in nes pin 36 for the +5v, and famicom pins 1 and 16 both goes to ground on nes pin 1. The famicom pins 45 and 46 I ust solder them to nes 51 and 52. I believe they are needed for the extra audio mod for games like jap castlevania 3. I do the mod like this I solder from the famicom pin 46 a 100 kohm resistor then a 1uf capacitor to the nes pin 18 on the board that goes to the expansion. By the way I remove the exp port. I haven't try the mod because I dont have the castlevania game but it should work. The hard part is soldering the pins 1 to 30 on the board but use a multimeter to find the traces, most of them goes directly to the chips, never solder a cable on a trace afther the chips. This is an easy mod and I'm no near expert. Also the exp, system clk and cic pins most are NC (no connection) on the famicom side. http://www.benheck.com/Downloads/NES_Famicom_Pinouts.pdf
Perfect. Just what I needed. Now to do some hacken. Thanks for the tip with the GND and voltage. I didn't understand why you even mentioned it till I looked at the PDF you posted.
OK. I performed the mod on my US NES. I have checked all the connections and they look good. When i fire up the console I get graphics glitches with Fami games. NES games are working fine so i have not broken anything. Audio is working fine for fami games and you can play but the graphics are pretty screwed. I noticed that pin 53 and 54 of the fami cart slot are switched in that PDF. Is that correct? I have no shorts or anything. I will need to check it tomorrow when I have fresh eyes but if anyone has any tips let me know.
yes 53 and 54 are inverted in the famicom side maybe that is the glitch problem. This is how I mounted mine just for the looks. When I finish the custom paint of the top cover I upload it.
Definitely show us a finished picture when you can. Are the black blocks just wood, plastic? Are those the only two screws only the slot in place?
yes they are wood and its hold with four screws 2 on the wood blocks and 2 on the black plastic above the 72 pin connector. Also there are another 2 screws holding the block underneath.
OK. Check all my connections and it was those flipped connectors I mentioned before in the PDF. Looks like that PDF has a few errors in it. Now its working perfectly. I have cut out a slot in the top of the case and mounted the connector. Image quality is perfect. NO JAIL BARS NOW!!! Thanks Kaicer for planting the idea in my head to do this one!
I'm glad you got it work. I believe you can use a famicom disk system with it too. I want to experiment but I dont have a disk system yet, I'm looking in ebay for one cheap.
