Help Writing Gameboy Color DEV CART

[YoshiMoshi]

Hi,

I have a cart similar to this one.

http://hentenaar.com/gb-dev-cart

There's a SWD of the cart on that site, and here's a picture of it



Is there already a solution out there to write to these carts, instead of making our own HDW and SFW?

So it appears that the interface is something like below

GBC cartridge header -> MBC5-D -> Sharp flash

Here's the DS for the sharp flash http://hentenaar.com/gb-dev-cart

So it appears that the issue is, using the 32 pin header, what do I have to input to set the write protect pin high and the write enable pin high on the MBC5-D memory bank controller chip. What has to be done on the header to set these pins high?

Any ideas or possible solutions that already exist?

Seeing that most of the parts are COTS parts, I would assume someone has already done this project before?

 

[Ryccardo]

Well, the write protection is wired to pin 31 (so did some unlicensed flashcards), but I don't know if the mapper will attempt to pull it down or whatever; and the write enable comes from the mapper...

Documentation of the MB5D (of which I've never heard before) is certainly needed (unless you want to remove the nor and program it externally )

 

[YoshiMoshi]

what exactly do you mean by mapper?