Reprogramming N64 CIC on repros

[JCreazy]

Hello everyone. I am not sure how many people have attempted this but I am attempting to reflash the CIC on one of my repros using the instructions here. I ended up using platform.io to upload the sketch the Arduino Uno because the Arduino software was having trouble compiling. Anyway, I have connected all the dupont connectors to the correct locations. I run the .bat file that I created (I changed the port to the correct one) I just get the error of

avrdude.exe: stk500_recv(): programmer is not responding avrdude.exe: stk500_getsync() attempt 1 of 10: not in sync: resp=0x38

It goes through all the attempts and then just says it's done.

Any advice?

Also, out of curiosities sake. Is it at all possible to incorporate this into the cart reader? I know uses a different Arduino but I think most of the pins of the CIC chip can be accessed through the cartridge slot.

Thanks

[sanni]

The CIC pins are not connected on the Cart Reader PCB, but you could wire them up manually and try it. It could work.

[KobeOne2]

@JCreazy Did you find a solution for this? I'm having the same problem.

[KobeOne2]

Found the mistake. It is required with most Arduino boards (UNO, Mega, ...) to put a 10µF electrolytic capacitor between RESET and GND with the positive (long leg in most cases) connected to RESET.

Btw: Is there a tool to check which save type a (e.g. ROM hack) N64 ROM uses?

Edit: Sorry, I seem to have updated the wiki article for flashing N64 repros; I figured I couldn't edit the live version and could only make a pull request or something.

[sanni]

Thanks for adding this info to the wiki. 👍