Atari 2600 Hardware

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2600 Jr.

Top of motherboard
Bottom of board
Board label: C021503 Rev D
A# Brand Name Description Documentation
A1 ? UM6532 PIA (RAM, timers, I/O)
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A2 ? UM6507 6507 Processor. Variant of the 6502.
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A3 ? C010444 TIA (Video and sound)
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A4 ? CD405OBE ?
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A5 ? 3086PC ?
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2600

Board label: C015519 Rev.12