Choplifter Graphical Glitch(?)

[Elerach]

Im having a problem with my choplifter 7800 cart. i can turn it on, the menu works fine, the game plays fine, but some times the graphics change colours and the sprites change. i was wondering what was wrong, and i there was anyway to fix this.

 

Pictures added:

 

pictures are too big to upload so i will be loading them on photobucket shortly.

 

Here are the pictures:

Glitched: http://i257.photobucket.com/albums/hh223/E...ch/IMG_0143.jpg

Working: http://i257.photobucket.com/albums/hh223/E...ch/IMG_0142.jpg

Edited December 13, 2007 by Elerach

[+Mitch]

That's usually caused by timing problems on the 7800. The system may be aging to the point that it is far enough out of spec now that it's causing issues on some games.

 

Mitch

[Elerach]

Really? ouch...just got it 2 days ago. well choplifter carts arent that expensive....so first ill try cleaning the board and if that doesnt work ill buy a new cart...and if that doesnt work...well i guess ill have to live with crappy sprites!

[atomickneedrop]

Interesting. I had a cart of Choplifter that had graphical glitches. After awhile, it would seemingly revert to a simpler graphic style;smaller, less colorful chopper, smaller, single color people. smaller, less colorful american flag, etc. It almost looks like what the 2600 equivalent might be. Does this sound like your problem? Anyhow, I bought another cart, and it works fine on the same console.

[+Mitch]

Choplifter is only a 32K game so there's not much to fail inside of it besides the ROM chip itself. I guess it could be an issue of poorly made ROM chips that flake out on some 7800s. Picking up another copy of Choplifter is definitely cheaper than buying a new 7800.

 

Mitch

[ninermaniac]

Choplifter is only a 32K game so there's not much to fail inside of it besides the ROM chip itself. I guess it could be an issue of poorly made ROM chips that flake out on some 7800s. Picking up another copy of Choplifter is definitely cheaper than buying a new 7800.

 

Mitch

 

Best advice your going to get my friend!

[FireTiger]

http://www.atariage.com/forums/index.php?s...p;hl=choplifter

 

I have had the same exact problem (link above)

 

As I recall the problem ended up being with that cart and that 7800, the two were not compatible for whatever reason...

 

on the CC2 there is no problem on the same 7800... so the cart is the likely culprit.

Edited December 15, 2007 by FireTiger

[Elerach]

ok, thanks for the responses. i tried cleaning the board and that didnt do anything so im just going to buy a new choplifter cart.

[shadow460]

I just picked another Choplifter! up. I was planning to build it into a RAM cart for DevOS, but it's not what I need for that. It seems to work as it's supposed to.

 

The end label will have to be repaired, and the screw was already exposed when I purchased the cart. One more thing, one of the ROM chip legs has been pulled up and it's connected to the board with a resistor. Holding the board with the chip face up and the connector pointed down, the lower right pin is connected by a resistor.

 

Anyway, I'm pretty good with label repair so the end label won't be a difficult fix. PM me if you're interested.

Edited December 16, 2007 by shadow460