What can you guys tell me about these rom chips?

[Parrothead]

 

I am picking these up tomorrow .

[Nukey Shay]

Homemade pirates of mostly common games? I'm guessing that "Donkey Kong" is actually DKjr, "Star War" is either Jedi Arena or Empire Strikes Back, and "Nigthmare" could be the game of the same name by Sancho. Be careful with those pins...and give a yell if you find out anything interesting

[nathanallan]

They definitely appear to be homebrews, but I can't figure out what system they would go to. Eliminated C64/128, 2600, 7800, Colecovision, Intellivision. Possibly for a Atari 5200?

 

The number of pins are the same. 12 on a side, matches the pinout. That's my best guess.

 

Nathan

[Parrothead]

They definitely appear to be homebrews, but I can't figure out what system they would go to. Eliminated C64/128, 2600, 7800, Colecovision, Intellivision. Possibly for a Atari 5200?

 

The number of pins are the same. 12 on a side, matches the pinout. That's my best guess.

 

Nathan

 

They are part of an Atari 2600 lot I found on Craigslist. Picking them up in the morning.

[nathanallan]

They may be copies of the games they are labeled as. I mean, if I had a 5200, couldn't afford games but had a buddy with an rom burner and spare parts, I'd have copied them. And if it were 1980-something and I was a kid with a paper route. So I logic out that they are 5200 copy-carts.

 

Nathan

[l3ushwig]

The carts without resistors and such look like plain ROM chips that were taken out of carts and used with the 24 pin socket.

 

Never seen a dual chip pirate such as that one before, You would think it would be just 1 EPROM. Dunno whats up with that one.

 

Cool looking bootlegs!

[+Omegamatrix]

I've never seen chips like that for the 2600 before in all the games I have taken apart.

[nathanallan]

Okay, I don't think they're 5200 carts, just found a correct pinout for them. Or maybe I read it wrong. oops.

Edited April 23, 2008 by nathanallan

[CPUWIZ]

I've never seen chips like that for the 2600 before in all the games I have taken apart.

 

They are crude garage made circuit boards for the 2600. I've seen one of those before. I'd be surprised if they all worked.

[Bruce Tomlin]

Yep, home-made 2600 pirate boards. It's amazing how many variations there are of such boards.

 

These are interesting in that they seem to have a transistor-based chip select inverter circuit. Also, many of them are PROMs or some other one-time-programmable chip. Usually a cache of pirate games is all EPROM.

Edited April 23, 2008 by Bruce Tomlin