WTB: NES DEVCART LESSONS

This is an archive of a topic from NESdev BBS, taken in mid-October 2019 before a server upgrade.
View original topic
WTB: NES DEVCART LESSONS
by on (#87878)
I want to make my own Nintendo cartridges for the songs and simple programs I write. I've got a programmer and a UV eraser. I'm not sure what chips I need to buy. I just need the help of someone who's done this a few times to correspond with via email a few times and answer some beginner questions.

Depending on how much help I actually end up needing, I would pay between $30 and $50.

Reply in this thread or email me at nickmaynard at gmail.com

by on (#87884)
The knowledge is all here, you don't have to get it by e-mail or even pay for it. If you search this forum carefully, you'll find dozens of threads made by people who were exactly where you are now.

If your programs are really simple, I doubt you'll need carts with large amounts of ROM or complex mappers, so what you want to do is actually *very* simple.

The chips you need are the 27Cxxx series (if you go with EPROM) or the 29Cxxx series (if you go with Flash), you can't go wrong with those. The "xxx" is a number that specifies the size of the chip in kilobits. To convert kilobytes into kilobits you just need to multiply by 8. So, if your program has 32 kilobytes of PRG-ROM, you'll need a 32 * 8 = 256 kilobits chip, i.e. a 27C256 or a 29C256. These numbers usually have 3 digits, so a chip with 4096 kilobits has its name ending in "040" instead.

by on (#87886)
This info might help a little:
http://thetechnickel.com/projects/nes-development-intro/