Atari 2600 Field Service Manual

TABLE 4-1
Connected Pins on Motherboard
ADDRESS
LINES
A20 2 A202
5200
(TIA) (RAM) Connector
ABO . 5 32 7 8
DATA LINES:
DBO 25 14 33 9
-- Indicates no connection on that line
2600/2600A Domestic VC5

Atari 2600 Specifications

General

Manufacturer	Atari, Inc.
Release Date	September 11, 1977
CPU	MOS Technology 6507
CPU Speed	1.19 MHz
RAM	128 bytes
Graphics	Television Interface Adaptor (TIA)
Media	ROM cartridge
Successor	Atari 5200
Colors	128
Sound	2 channels
ROM	4 KB
Controller Input	Joystick