Help with identifying 2600 chips

[bloatedmonkey]

I received these a couple years ago along as part of a package of "Atari Service" replacement parts. All of the parts are for the 2600, so I assume the chips are also. I have a service manual, but the codes on these chips are not listed. So I was wondering if one of you tech guys could tell me what these are (if they are indeed for the 2600) in layman's terms. Thanks.

 

IC GTIA - CO14805 (2")

IC POKEY - CO12294 (2")

IC ANTIC - CO12296 (2")

IC 74LS10 - CO14339 (3/4")

IC 74LS244 - CO14313 (3/4")

[Mindfield]

GTIA, ANTIC and Pokey are all out of an 8-Bit Atari or 5200. GTIA and ANTIC take care of video, and POKEY is audio. I'd imagine the others are probably also from an 8-bit or 5200 if they came in the same kit.

[ApolloBoy]

Yeah, they're from a 5200/8-bit alright. Those last two chips are most likely RAM chips.

[Mindfield]

I'm thinking they're probably controllers. The DRAMs are probably generic off-the-shelf chips; a repair kit would usually contain items specific to the unit they're for that can't be sourced elsewhere.

[Robert M]

IC 74LS10 - CO14339 (3/4")

IC 74LS244 - CO14313 (3/4")

 

 

These 2 are standard low-power TTL logic chips.

 

74LS10 is a Triple 3-input NAND gate chip:

- There are 3 logic gates on this chip. Each gate has 3 inputs and 1 output. The output is low only when all 3 inputs are high.

 

74LS244 is an Octal 3-state Line Buffer/Driver chip:

This chip has 8 gates with 1 input and 1 output each. The output equals the input. Every digital chip ouput has a fan-out rating. The fan-out is the number of inputs that can be connected to that output before the amout of power the inputs need exceeds what the output pin can provide. By using a buffer, you can effectively increase the fan-out of an output at the cost of some system speed.

 

These are both standard logic chips that can be bought for less than $1

 

Cheers!