Radica Genesis cartridge connection SUCCESS!!!!

Post by **benheck** » Sun Dec 19, 2004 5:59 pm

Ha ha ha ha! I KNEW it would work!

Sure, it only took 4 hours of soldering, and a lot of that was to fix mistakes (such as wiring the cartridge slot in REVERSE - don't you just hate when that happens?) but I have successfully connected a cartridge slot to the Radica Sega Genesis thing. It has 20 address lines allowing you to use pretty much any Genesis game (I've tested some newer high-animation ones such as Earthworm Jim 2 and Batman & Robin, and they all work)

What I did was I found some Genesis cartridge ROM pinouts on the internet... a page with 3 different types (different ROM sizes) pinned-out. I then marked off the lines that were always the same (D0-D15 and A0-19) This left 2 pins on the Radica ROM unaccounted for. One is NC (no connection) so I assumed the other was A20. And it was. It was process of elimination and of course GUESSING.

The pinout drawing can be found in the Downloads page in the Videogames section of this site. I redrew the cartridge connector because the one posted on these forums started with A1 instead of A0, which is really confusing when everything else started with A0.

A photo of the rewired Radica can be seen on the main News page.

The Radica appears to run off 3.2 volts. 5 are apparently NOT required to run the cartridge. The unit draws a WHOPPING 65mA off 4 AA's.

Enjoy!

Post by **gannon** » Sun Dec 19, 2004 6:21 pm

woohoo!!! I'm getting a genesis tomorrow too, so I think I might get a radica and try this out

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 6:24 pm

Going to the mall on thursday I know what Im buying

goodie · Post by **goodie** » Sun Dec 19, 2004 6:30 pm

YAY!! I think I know what my next project will be now....

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 6:34 pm

I gotta wait till January

Wait Ill try to beat Ben but mine will look really crappy

Post by **benheck** » Sun Dec 19, 2004 6:35 pm

Updated: Games that work (Testing all Genesis cartridges I own)

Space Harrier 2: Yes
Gunstar Heroes: No
Alien Storm: Yes
Quakshot (Starring Donald Duck): Yes
Batman & Robin: Yes
Golden Axe: Yes
Awesome Possum: Unfortunately YES
Ghouls and Ghosts: No
Sonic 3: No
Sonic 2: Yes
Sonic 1: Yes
Afterburner 2: No
Super Thunder Blade: Yes (The arcade of that was AWESOME! Like a possum)
Virtua Fighter 2: Yes (Yes, it exists for the Genesis. And yes, it sucks)
EA games: Don't know, the carts don't quite fit onto the slot and I'm too lazy to shave more off the slot today.
Air Buster: Yes (Another cool arcade game)
Aladdin: Starts up but freezes after the Genie shoot Iago (you know, the Gilbert Godfried parrot)
Vectorman: Yes
Earthworm Jim 2: Yes
Castlevania Bloodlines: Yes (That game had some COOL FX!)

that's all I have. If some of you wire this up more can be tested.

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 6:36 pm

Wait 65mah come on with a pocket tv led mod thats like hm........... 300mah

goodie · Post by **goodie** » Sun Dec 19, 2004 6:37 pm

No Sonic 3?

Post by **gannon** » Sun Dec 19, 2004 6:40 pm

hmm... If I remember right, the Genesis 3 had a similar compatability list.

MM007 · Post by **MM007** » Sun Dec 19, 2004 6:57 pm

any idea of how to get Sonic 3 to work with it?

Post by **Sparkfist** » Sun Dec 19, 2004 7:10 pm

Thats great to hear. I guess thats something I can look at when I'm done with the NESp I'm working on.

Ben you've redemed yourself.

Post by **gannon** » Sun Dec 19, 2004 7:11 pm

Well, odds are that sonic 3 requires more hardware than what was put into the radica. I think that's the reason it doesn't work on the Genesis rev. 3 too

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 7:53 pm

Whoa you dont have MORTAL KOMBAT

Do you guys think it would be bad to destroy a genny 2 i the name of progress?

shelter pitfall · Post by **shelter pitfall** » Sun Dec 19, 2004 8:07 pm

segasonicfan, see if megadrive(J) games work.. (cotton?)
wow... thats cool.
I'm going to try that after my wizdom teeth get pulled.
where can I get the cart slot?

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 8:09 pm

a genny ebay or uh www.skycraft.com www.ptsurplus.com