Genesis ROM / Radica / Cartridge Slot Talk

Post by **gannon** » Sat Dec 18, 2004 10:02 pm

JackFrost22 wrote:Bluetech iwll figure it out hes a gen ass

When I talked to him he never even heard of it before. He didn't show too much interest in it, but he did give a few pointers.
Also, could anyone post any high res internal pictures of the thing?

Red5 · Post by **Red5** » Sun Dec 19, 2004 7:50 am

I talked to Kevin Horton just a bit ago about this and he suggested dumping the onboard games to see if they're being emulated or not

According to the Radica website they are the original unmodifed games, it's more a case of figuring out the pin-outs for the rom chip.

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 9:42 am

but it might be a messed up chip

MM007 · Post by **MM007** » Sun Dec 19, 2004 12:21 pm

segasonicfan wrote:NiN your screen name looks awfully familliar, did we do a trade on GameTZ or something?

-Segasonicfan

NiN^_^NiN is a veteran of portablization. ^^

Post by **benheck** » Sun Dec 19, 2004 1:14 pm

I've got all the wires attached to the ROM spot but have only connected a few sure-fire ones (GND and VCC) to the cartridge slot.

I just don't know where to start!

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 1:14 pm

Glad to hear it Ben

Post by **benheck** » Sun Dec 19, 2004 1:57 pm

Wow. Some Portable Crusader I am.

For some dumb reason I counted 8 pins between the GND's and the edges, but there's 9! I came across this while wiring the ROM to the cart connector.

So now the PINS on a Genny ROM match the Radica ROM spot pretty much dead-on, even considered that Pin 1 of the Radica ROM is NC.

With my tail between my legs I'll wire up the cart connector using this NEW pinout. If it works I'll post the pinouts.

Sorry!

JackFrost22 · Post by **JackFrost22** » Sun Dec 19, 2004 2:03 pm

Wow I really need to get one would KB TOYS have it

HK-47 · Post by **HK-47** » Sun Dec 19, 2004 4:02 pm

Common Ben, hurry!

Post by **SpongeBuell** » Sun Dec 19, 2004 4:27 pm

benheckc wrote:Wow. Some Portable Crusader I am.

For some dumb reason I counted 8 pins between the GND's and the edges, but there's 9! I came across this while wiring the ROM to the cart connector.

So now the PINS on a Genny ROM match the Radica ROM spot pretty much dead-on, even considered that Pin 1 of the Radica ROM is NC.

With my tail between my legs I'll wire up the cart connector using this NEW pinout. If it works I'll post the pinouts.

Sorry!

And now I shall remove you from the LPC list for thy sin, sir Ben.

bleughbleugh · Post by **bleughbleugh** » Mon Jan 23, 2006 11:59 am

been tracing the pins thru, and looks like the streetfighter 'two control pad' and the sonic 'one control pad' are fairly similar

the important pins are the same

1 NC (well, it goes to a pad on the PCB that looks like it could have a reg fitted, so this is probably an unused VCC / 3v input)
13 GND
23 VCC
32 GND
33 VCC

the street fighter uses single LS32 Or gate and a single HC174 flip flop on the underside

things of note are

2 LS32 pin 6 (A18)
3 LS32 Pin 3 (A17)
6 HC174 Pin 14 (A5)
7 HC174 Pin 13 (A4)
8 HC174 Pin 11 (A3)
9 HC174 Pin 6 (A2)
10 (CPU) - segasonics went to HC174 pin 4 - A1
11 (CPU) - segasonics went to HC174 pin 3 - A0
34 (CPU) - segasonics went to LS32 pin 6 - A16
35 (CPU) - segasonics went to LS32 pin 7 - A15 (not GND as stated)
43 LS32 Pin 8 (3y)
44 LS32 Pin 11 (4y)

all other pins seem to go to the CPU - 32 pins in total, which would give 22 address lines and 10 data lines (1 Mbit, defo not, ben's proved that)
or
21 addres lines and 11 data lines (2Mbit, unlikley)
or
20 address lines and 12 data lines - more likley since the rom chip says 4M on it, which is probably 4 Mbit

so, the specs are the same, however, it seems that probably some of the address and data lines are changed around a bit

Ben, how did you go about determining the actual pinouts?,
was it just a case of plug in and see?

oh, segasonicfan, looks like in your rom cart summary, you've got 1 pin wrong, 35 goes to pin 7 of the LS32, it cant or it'd be grounded!,

so, in summary, those that can't get carts to work on their streetfighter game probably need to swap about some of the address lines a bit!

my guess as which ones to try would be - assume the data lines are correct, although its not possible to test whats what, only the address lines A0-A1 and A15-A16 seem actually to differ as they're no longer passed thru an or gate or the flip-flop

hope that makes sense

paul4990 · Post by **paul4990** » Mon Jan 23, 2006 2:16 pm

this thread is nearly 2 YEARS OLD! but bring it up.

Post by **SpongeBuell** » Mon Jan 23, 2006 2:20 pm

whoa, I think this is national "bring up an old post day or something" (with gamelver bringing up the top 10 systems thread, and this guy that came on to AtariAge)

Anyway, we now have a Genesis forum, so I'm gonna move this

Post by **bicostp** » Mon Jan 23, 2006 2:20 pm

Whoa! Ancient thread alert!

Locked. Please don't bring up such ancient threads.

*revises the rules thread to make things a little more clear because this happens quite a bit lately*

Jeff · Post by **Jeff** » Mon Jan 23, 2006 2:29 pm

Nice locking

benheck.com Forums

Genesis ROM / Radica / Cartridge Slot Talk

I miscounted PINS!

Re: I miscounted PINS!

street fighter radica - two joystick cart pinouts...........