NOAC with a replacable ROM? NOAC chip pinout?

Includes Atari 2600, Nintendo 8-bit, Sega Master System, MSX and more!

Moderator: Moderators

Post Reply
Calamity
Posts: 4
Joined: Thu May 01, 2008 5:24 am
Contact:

NOAC with a replacable ROM? NOAC chip pinout?

Post by Calamity »

Hi all,

I'm trying to pick out a Famiclone which I can put my own selection of games onto. I see most of them seem to have two epoxy glop-top chips on a PCB: the NOAC and a single(?) ROM chip which presumably stores all the games and menu screen too.

So a couple of questions: Is that ROM in there a standard type or something specially made for NOACs? I mean is it something which actually has separate PGM and CHR ports like a regular cart or does the NOAC have some magic within it which allows it to read everything from a single ROM? Does the NOAC include the magic for selecting between the images?

I have got an N-Joypad (very readliy available in the UK at the moment), which is a Famiclone without a cart socket. On the small PCB inside it has the two glop-top ICs, plus what looks like some random addressing logic (a couple of 74HC series ICs and a few transistors). Would anyone know what the pinout of that NOAC might be? It's not at all like the one Kevtris's Portendo uses as there's no provision for a slot connector and therefore less traces coming from it. Guess that would answer my first question. :)

Thanks!
Post Reply