wiring a famicom board to an NROM board

wiring a famicom board to an NROM board
by on (#48197)
i heard this is possible to do if you want to play a famicom game on a Nes. i know about 60-72 pin adapters, but they are hard to come by and i have alot of NROM boards and was planning on making a few repros that would be permanent. anybody ever do this? is there a wiring schematic anywhere?

by on (#48208)
Game for the nes and famicom are the same so there is no special rewiring if you take a famicom game and put in inside a nes cart. As long the hardware (mapper) and board are identical, it will work.

I tested some nes game on my famicom dev board to make sure the dev cart is stable and had no issue.

by on (#48233)
Banshaku wrote:
Game for the nes and famicom are the same so there is no special rewiring if you take a famicom game and put in inside a nes cart. As long the hardware (mapper) and board are identical, it will work.

I tested some nes game on my famicom dev board to make sure the dev cart is stable and had no issue.


yea, but famicom games have 60 pins, so you cant just put them in a nes cart and play them.

by on (#48237)
I believe he meant the ROM chips are compatible. They have the same number of pins and can be transferred from a japanese board to an american board without problems. The software inside the chips is always compatible too, because both regions are NTSC.

by on (#48242)
That's not what he means though as he knows that. He wants to use japanese only boards, ex: Konami VRC or Namco 106 or whatever.

by on (#48243)
I'm confused. I'm outta here!

by on (#48249)
I think it has something to do with rolling a JOINT: wiring directly from the cart edge of a Famicom game's PCB to the pin-holes of an NES-NROM board, making a ghetto NES-JOINT out of it.

by on (#48251)
http://nesdev.com/Ntd_8bit.jpg
http://nesdev.com/rom.txt

Connect the signals. CLK and the expansion pins don't go anywhere (unless you want expansion sound.) CIRAM = VRAM, PRG A# = A#, CHR A# = CA#, PRG /CE = /ROMSEL, etc. SOUND I connects to SOUND O...