electronizer Posted March 5, 2018 Share Posted March 5, 2018 I came across a bag of random ICs in some boxes of Atari stuff I acquired last year. I sorted out all the unique chips and straightened a lot of bent pins. Here's what I have: The gold and ceramic IC marked "proto" is apparently a 2600 Defender chip (CO12009). Anything else of interest here? Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted March 5, 2018 Share Posted March 5, 2018 (edited) I'd use them to repair a number of Atari's rom carts... though the CTIA's aren't super useful... they can get you by in a pinch... Edited March 5, 2018 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted March 5, 2018 Share Posted March 5, 2018 (edited) CO12295 CTIA (predecessor of GTIA) would have been pulled from early Atari 800's, and may be of interest to some for historical purposes.I'd hazard a guess, at 24 pins, these are mostly 2KB or 4KB ROM's, like you mentioned, for 2600 games... Edited March 5, 2018 by Nezgar Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted March 5, 2018 Share Posted March 5, 2018 (edited) second one in from top right is pacman 2600 second one down from top right is demons to diamonds, since you don't have them in numerical order... here is a common list.. there are more complete lists floating about.. CO11201 CombatCO11202 Air Sea BattleCO11203 Star ShipCO11205 OutlawCO11206 Slot RacersCO11207 Canyon BomberCO11211 RaceCO11212 Street RacerCO11218 3D Tic Tac ToeCO11221 Video OlympicsCO11222 BreakoutCO11223 BaseballCO11224 BasketballCO11225 FootballCO11227 Human CannonballCO11228 BowlingCO11229 Sky DiverCO11233 Night DriverCO11234 GolfCO11239 OthelloCO11261 Basic MathCO12008 Super BreakoutCO12009 DefenderCO12010 WarlordsCO12013 AdventureCO12015 Demons to DiamondsCO12016 SoccerCO12017 BackgammonCO12030 Circus AtariCO12031 SupermanCO12032 Space InvadersCO12035 Maze CrazeCO12036 Video CheckersCO12038 Missile CommandCO12041 SupermanCO12045 Video ChessCO12046 Pac-ManCO12047 Submarine CommanderCO12048 Video PinballCO12050 BerserkCO12052 CasinoCO12054 Haunted HouseCO12055 Yar's RevengeCO12058 Math Gran PrixCO12062 HangmanCO12937 Dodge 'EmCO16440 Realsports BaseballCO16449 Asteroidscn45160 Venturecn55210 Donkey Kong jrcn55237 Tappercn55238 Tappercn55241 Spy Hunter Edited March 5, 2018 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
alex_79 Posted March 5, 2018 Share Posted March 5, 2018 All but the last (marked "CO1203202") 24 pin chips are listed in the "Atari Engineering information System - Master List" document, that you can find on Atarimania: http://www.atarimania.com/documents-atari-2600-vcs-internal-documents_4_2.html CO12008 SUPER BREAKOUT CX2608 CARTRIDGECO12046 PAC-MAN CX2646 CARTRIDGECO18308 PAC-MAN (rom #1) CX5208 CARTRIDGECO12015 DEMONS TO DIAMONDS CX2615 CARTRIDGECO12048 VIDEO PINBALL CX2648 CARTRIDGECO18313 SOCCER (ROM #1) CX5213 CARTRIDGECO12032 SPACE INVADERS CX2632 CARTRIDGECO12054 NIGHTMARE MANOR (HAUNTED HOUSE) CX2654 CARTRIDGECO18802 MISSILE COMMAND CX5202 CARTRIDGECO12009 DEFENDER CX2609 CARTRIDGECO12038 MISSILE COMMAND CX2638 CARTRIDGECO12499 CUSTOM ROMCO18805 STAR RAIDERS (ROM #2) CX5205 CARTRIDGECO18807 FOOTBALL (ROM #1) CX5207 CARTRIDGECO18817 POLE POSITION (ROM #1) CX5217 CARTRIDGECO18812 QIX (ROM #2) CX5212 CARTRIDGECO19156 ROM 16K OPERATING SYSTEM - CUSTOM ROM (I.C.) - PAMCO18813 SOCCER (ROM #2) CX5213 CARTRIDGECO19407 FOOTBALL (ROM #2) CX5207 CARTRIDGECO18814 TENNIS (ROM #2) CX5214 CARTRIDGECO19415 CENTIPEDE (ROM #2) CX5215 CARTRIDGECO19857 SWORDQUEST FIREWORLD CX2657 CARTRIDGECO18815 CENTIPEDE (ROM #1) CX5215 CARTRIDGECO19418 DEFENDER (ROM #2) CX5218 CARTRDIGE Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted March 5, 2018 Share Posted March 5, 2018 cn is for third party chips and carts. Quote Link to comment Share on other sites More sharing options...
Rybags Posted March 5, 2018 Share Posted March 5, 2018 CTIA is very rare and worth some good money. There are also undocumented behaviours of this chip that need to be investigated. 1 Quote Link to comment Share on other sites More sharing options...
electronizer Posted March 6, 2018 Author Share Posted March 6, 2018 CTIA is very rare and worth some good money. There are also undocumented behaviours of this chip that need to be investigated. If I wanted to test the CTIA chips could I just plug them into any 400 or 800 CPU board? Or does it have to be a certain revision? Is there currently an effort underway to better replicate the behavior of CTIA in an emulator? Quote Link to comment Share on other sites More sharing options...
Kyle22 Posted March 6, 2018 Share Posted March 6, 2018 There should have been a C011223F version made. Frog baseball. 2 Quote Link to comment Share on other sites More sharing options...
Rybags Posted March 6, 2018 Share Posted March 6, 2018 CTIA should be directly exchangable with the NTSC GTIA. Common belief is that there was never a PAL CTIA. The most prominent known difference is that artifact colours are supposed to be different and unlike differences among machines it is supposed to originate at the chip. Also there is supposed to be some difference with positioning of PM graphics though it would need further investigation. Of course GTIA modes won't work on CTIA, you'll just get Graphics 8 with the pixels plotted improperly. But the OS supported GTIA modes from the original revision. 1 Quote Link to comment Share on other sites More sharing options...
ijor Posted March 6, 2018 Share Posted March 6, 2018 (edited) Also there is supposed to be some difference with positioning of PM graphics though it would need further investigation. I think we confirmed the behaviour long ago. The difference is the alignment (one half cycle) between hires on one side, and both lorez and players on the other. And the different artifacts is just a consequence of this alignment. We have die shots of CTIA, but only for the top layer. It is difficult to read the complete silicon layout without delayering (removing the top metal layer). It would be nice if another CTIA could be saved for another decap round. See this thread: http://atariage.com/forums/topic/191958-ctia-vs-gtia/ Edit: Added link to old thread about ctia vs gtia Edited March 6, 2018 by ijor 3 Quote Link to comment Share on other sites More sharing options...
electronizer Posted March 6, 2018 Author Share Posted March 6, 2018 All but the last (marked "CO1203202") 24 pin chips are listed in the "Atari Engineering information System - Master List" document, that you can find on Atarimania: http://www.atarimania.com/documents-atari-2600-vcs-internal-documents_4_2.html CO12008 SUPER BREAKOUT CX2608 CARTRIDGE CO12046 PAC-MAN CX2646 CARTRIDGE CO18308 PAC-MAN (rom #1) CX5208 CARTRIDGE CO12015 DEMONS TO DIAMONDS CX2615 CARTRIDGE CO12048 VIDEO PINBALL CX2648 CARTRIDGE CO18313 SOCCER (ROM #1) CX5213 CARTRIDGE CO12032 SPACE INVADERS CX2632 CARTRIDGE CO12054 NIGHTMARE MANOR (HAUNTED HOUSE) CX2654 CARTRIDGE CO18802 MISSILE COMMAND CX5202 CARTRIDGE CO12009 DEFENDER CX2609 CARTRIDGE CO12038 MISSILE COMMAND CX2638 CARTRIDGE CO12499 CUSTOM ROM CO18805 STAR RAIDERS (ROM #2) CX5205 CARTRIDGE CO18807 FOOTBALL (ROM #1) CX5207 CARTRIDGE CO18817 POLE POSITION (ROM #1) CX5217 CARTRIDGE CO18812 QIX (ROM #2) CX5212 CARTRIDGE CO19156 ROM 16K OPERATING SYSTEM - CUSTOM ROM (I.C.) - PAM CO18813 SOCCER (ROM #2) CX5213 CARTRIDGE CO19407 FOOTBALL (ROM #2) CX5207 CARTRIDGE CO18814 TENNIS (ROM #2) CX5214 CARTRIDGE CO19415 CENTIPEDE (ROM #2) CX5215 CARTRIDGE CO19857 SWORDQUEST FIREWORLD CX2657 CARTRIDGE CO18815 CENTIPEDE (ROM #1) CX5215 CARTRIDGE CO19418 DEFENDER (ROM #2) CX5218 CARTRDIGE Thanks for the link to the Master List document—what an amazing resource! The CO12499B "custom ROM" is apparently version B of the 400 OS. Also I wonder if the CO1203202 chip has anything to do with CO12032 Space Invaders? Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted March 6, 2018 Share Posted March 6, 2018 easy enough to check, just pop them in socket-ed cart pcb... Quote Link to comment Share on other sites More sharing options...
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