nesdev.org

Hello,
I was wondering if it is possible to use more than one EPROM (namely 27c322) with the use of a 74LS139. If it is, how would it be connected? Pin 1 goes to /OE obviously but would I need to connect Pin 2 and 3 to A21/A22 or somewhere else? Help is appreciated, if someone knows how to do this.
I'm planning to put the BadApple Demo (which is 8MB btw) on a cart just to test how it works.

You should probably ask on a forum that knows more about the megadrive... my best guess is that you'll hook up 68000.A22 to 74139.A, 68000.A23 to 74139.B, 68000./AS to 74139./G, and 74139./Y0 and /Y1 to the two ROM's /CE pins.

Have been wondering the same thing Ice Man. A 12MB Ultimate Mortal Kombat Trilogy reproduction would be fun to wire up.

Isn't there anything interesting on http://nintendoallstars.w.interia.pl/romlab/romlab.htm ?? Check Sega Mega Drive/Genesis section and you can find this:
http://nintendoallstars.w.interia.pl/ro ... 4cart1.jpg
http://nintendoallstars.w.interia.pl/ro ... 4cart2.jpg