More portable gamegear...

[Tomlo]

In late 2006 their was a re-release of the sega game gear by a couple 3rd party companies the differences are a LCD screen, much smaller, a tv out connection, and a very good battery life but can only play 20 games on a built in rom, has anyone done any work with one of these modding them to play gamegear or SMS carts?

Heres one version...

[cowsgoquack101]

Neat. I haven't hears anything about it though.

[Sparkfist]

I have to tell you that if you plan to play Game Gear games on it, if possible at all, you need to check the hardware. Reason being that an SMS can't play Game Gear games, the GG has too many more colors and I also believe that it's a faster CPU. If your lucky, that being that you can add a cartridge slot and it's based on the GG you could wire it up to play either the GG or SMS games.

If you get one feel free to post pictures or descriptions.

[Haku]

The unit has GG and SMS games in it, Sonic Triple Trouble was only released on the GG so it must run GG games

I'm sorely tempted to get one because I think the GG is great and especially because it has Triple Trouble, I have 10 GG units when I last checked (a few of them are bust) and over 100 carts including an action replay.

If anyone figures out how to add a GG cart slot onto the PlayPal I'd be eternally greatful.

[Tomlo]

As far as I can tell it is GG hardware so it would be able to play GG and SMS games if someone were to open it and wire a cart slot. They go for around $20 which is nice for even the backlit screen. I was just wondering if anyone did any work on one, I will have to pick one up at a local shop or ebay and check them out.

[bmire1985]

link to photo gallery
http://www.tigerdirect.com/applications ... 1&NoMapp=0

this thing is tiny compared to a gg

[segasonicfan]

I'm buying one ASAP and taking pics of the inside :) I will definitely find a way to play GG games on this sucker ala Radica style. I hope it has some sort of RGB output though, composite is terrible :( It may very well though since the display would look AWFUL if it were composite :)

I'm going to Fry's tomorrow to see if they have them in store. If not I am ordering one online.

-Segasonicfan

[grahf]

Im looking forward to some board pics SSF.

[ATOMICMAN]

http://zombiechow.com/photos/ColecoSega/

[ATOMICMAN]

http://zombiechow.com/photos/ColecoSega/

[segasonicfan]

thanks for the link atomic man. I will definitely post some more hi res pics and detailed circuit numbers, datasheet info, and what not. To say I'm determined on modding this thing is a huge understatement, I have been planning and working on a GG uber portable for quite some time (as you can tell from my page).

I went to Fry's to buy one of these today and they said they only had one in stock according to their system. I couldn't find it on the shelves (searched for the better part of an hour) but one of the employees will be looking for me tonight. Worst case I will purchase a handful online :)

I went ahead and bought a couple of the new GG plug n plays that they have out now. Same thing but without a screen. Here is the good news though: the ROM is soldered in and looks IDENTICAL to the Radica ROM. I'm sure this can be hacked Radica style and I will definitely do so soon. I will also post pics and info. It looks like using the guts from this will be more suitable for a portable since the previous pics show either built in CPU/ROM (the glob) and a RAM circuit, or something definitely more complex. My other goal with this project is to make this sucker RGB, I cannot and never have settled for the composite trash (the Radica's main problem BTW). with the LCD in that other model I'm sure there is RGB output, that's the great news :)

I will keep on posting more info here as I uncover the mysteries of these devices. I will also be posting pics of the plug n play soon.

-Segasonicfan

[Skyone]

I went ahead and bought a couple of the new GG plug n plays that they have out now. Same thing but without a screen. Here is the good news though: the ROM is soldered in and looks IDENTICAL to the Radica ROM. I'm sure this can be hacked Radica style and I will definitely do so soon. I will also post pics and info. It looks like using the guts from this will be more suitable for a portable since the previous pics show either built in CPU/ROM (the glob) and a RAM circuit, or something definitely more complex. My other goal with this project is to make this sucker RGB, I cannot and never have settled for the composite trash (the Radica's main problem BTW). with the LCD in that other model I'm sure there is RGB output, that's the great news

Ha ha! I was JUST about to tell you about this! Is the case shaped like Sonic's head and the joystick a Sonic fist? If so, I bought like 4 of those down at Fry's the other day! This thing looks great, can't wait for you to gather some information.

EDIT:
http://img262.imageshack.us/img262/2451 ... 004uz8.jpg
http://img367.imageshack.us/img367/5250 ... 005vx4.jpg
http://img367.imageshack.us/img367/3722 ... 006nz2.jpg

Sorry about the quality, but is that the one?

[segasonicfan]

LOL, yup that's the one. I bought 2 of them :) Sadly it looks like they ONLY support Composite coming from the CPU which sucks major. This may be worthless to mod for me because of that (I refuse to make a portable with composite video). However, the ROM should def be hackable, I'm trying to find the GG ROM pinout online now. No luck so far but I will keep searching. Looks like the one with the screen is going to be the real deal though, since it most likely supports RGB :)

-Segasonicfan

EDIT: OK I cracked open a spage GG cart and it's one ROM chip inside :) It's 32 pins but the cart pinout itself is 45. Hopefully with this I can wire the GG cart inside the plug n play and see if I can get something working:

http://www.gamesx.com/cartouts/ggcart.htm

Keep your fingers crossed...

[Skyone]

I'll work parallel to you by tomorrow. We should be able to pull stereo out of it, at least.

EDIT:

Code: Select all

GAME GEAR
------------------------------------------------------------

                            GameGear cartridge inputs

2 ->   [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] []  <- 44
1 -> [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] <- 45

                            top view of gamegear cartridge

No      Name            Description

1       +34(V)          liquid drive
2       +5(V)           +5(V)
        __
3       WR              write signal
4       A12             address
5       A7/CL1B3        address
6       A6/CL1A2        address
7       A5/CL1B2        address
8       A4/CL1A1        address
9       A3/CL1B1        address
10      A2/DW           address
11      A1/DO3          address
12      A0/DO1          address
13      D0/DB           data
14      D1/P3           data
15      D2/P2           data
16      GND D           ground
17      GND A           ground
18      GND D           ground
19      D3/P4           data
20      D4/P1           data
21      D5/CL2          data
22      D6/DO2          data
23      D7/DO4          data
        ____
24      MREQ            memory request
25      A10/TPR2        address
        __
26      RD              read signal
        _____
27      EXM 2           0~7FFFH
28      A15             address
29      A11             address
30      A9/TPR1         address
31      A8/CL1A3        address
32      A13             address
33      A14             address
        _____
34      EXM 1           8000~BFFFH
35      +5(V)           +5(V)
        __
36      M1              M1 cycle
37      IORQ            I/O request
        ____
38      RFSH            refresh
        _____
39      RESET           reset
40      CCLK            clock
41      GND             ground
        __
42      GG              MS/GG
        __
43      TV              TV cartridge signal
44      TVSNDR          TV's right channel
45      TVSNDL          TV's left channel

[HotDog-Cart]

I wish I could get atleast one of these or one of the sonic shaped things. Too bad I'm in canada, and we dont have a "fry's".