My modded flashback 2

[SignGuy81]

Here are some pics of my modded flashback 2. I'm not done yet though I'm going to add an LED for power and I am going to put in a switch for automatic switch between cart and internal. Just wanted to show my progress so far with my 3D printer and freecad.

[SoundGammon]

Nice!

 

My idea, when I get the time, is to build the Flashback 2 into a Sears Sixer!

[Skippy B. Coyote]

Awesome job! Ever since I learned to solder last year I've been really wanting to add a cartridge port to a Flashback 2, I just haven't haven't gotten up the nerve to cut into the case yet.

[Omega-TI]

Impressive! Did you use a Dremel?

[Mr SQL]

That looks really cool! I thought the Flashback 2's were limited to 4K carts only due to a design flaw. Ms Pacman is an 8K bankswitched cart, so I bet the supercharger and the harmony would work with your model too.

[SignGuy81]

Impressive! Did you use a Dremel?

Yes. I goofed and got a little too close to the corner of the case and scraped it a little. Isn't very noticeable even up close looking at it but the iphone gets everything.

[SignGuy81]

That looks really cool! I thought the Flashback 2's were limited to 4K carts only due to a design flaw. Ms Pacman is an 8K bankswitched cart, so I bet the supercharger and the harmony would work with your model too.

So far Ms PacMan has been playing fine. I can't find it now but I came across a page before browsing the web that listed games that were compatible and games that had issues but I can't find it now.

[Omega-TI]

I don't see a scuff...

[Jinroh]

Awesome job looks so clean! I would love to mod my Flashback 2 similarly as well.

[+iesposta]

If I recall, the A12 line, which internally is handled correctly because it plays built-in Millipede (w/Sara chip RAM), is not working correctly when you solder a cart connector to the circuit board numbered traces.

 

Games with RAM, advanced bank switch game carts, and The Supercharger fail because external A12 doesn't change.

 

I tried my plain 32K bank switched Berzerk hack, and that runs on the Flashback 2.

So any non-RAM 8K, 16K, 32K should play.

 

I seem to recall some Undocumented Opcodes cause some game programs to fail, but those would be mostly used in homebrew era games.

 

The Flashback 2 board needs probed to see if the A12 line can be picked up somewhere else.

Like when playing the built-in Millipede, is an external trace changing the way A12 should?

The Flashback 2+ has a ROM board with pins that hold the built-in games. Some of those pins have to connect to the "Atari on a Chip".

The early Flachback 2 had the ROMs under a black glob.

[SignGuy81]

I've been aiming to come back here and upload the STL files but never got around to it. I uploaded them here http://atariage.com/forums/topic/276533-wanted-cartridge-guide-and-cartridge-connector-for-2600/ in case anyone was interested in making some.