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Atari 400 Service Manual

Atari 400
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ACCESSORIES
CX852 8K RAM Memory Module
CX853 16K RAM Memory Module
CX70 ATARI Light Pen
CX30-04 Paddle Controller Pair
CX40-04 Joystick Controller Pair
CX81 ATARI I/O Data Cord ( 3 feet)
CX86 Printer Cable (included with ATARI 825)
CX87 Modem Cable (included with ATARI 830)
CX88 Interface Module Cable
CX89 Monitor Cable (Color Monitor)
CX82 Monitor Cable (B/W Monitor)
CAO14746 TV Switch Box
CA014748 Power Adapter (included with ATARI 400, 800, 810, 850)
C014854 ATARI 8 20 Printer Ribbon
C014026 ATARI 820 Printer Paper (Roll Paper)
CX4100 ATARI 410 Digital Cassette (Blank)
CX8100 ATARI Blank Diskettes (5 per box)
CX8101 ATARI 810 Master Diskette (1 per box)
CX8104 ATARI 810 Master Diskette II (1 per box)
CX8111 ATARI 810 Formatted Diskettes II (5 per box)
CX8201 ATARI 815 Master Diskette (1 per box)
1.9 SPECIFICATIONS
This paragraph provides the operating characteristics and
specifications useful to a service technician for maintaining the
ATARI 400/800 Computer Console systems. All specifications and
characteristics are presented in Tables 1-1 and 1-2.
Table 1-1. ATARI 400 Computer Console Specifications
Console: FCC approved with built-in RF m odulator.
CPU: 6502B Microprocessor; 1.78 MHz clock.
Color: 16 colors, each with 8 intensities.
Sound: Four independent sound synthesizers for musical tones
or game sounds, four octaves. Variable volume.
Internal speaker (in addition to audio through
television set).
Memory: 8K bytes of Random Access Memory (RAM) is included.
The ATARI 400 may be expanded to 16K at your service
center. lOK bytes ROM Operating System, expanded to
16K with user installed solid-state Program
Cartridges.
Keyboard: 57 alphanumeric keys plus 4 function keys. Upper/
lower ca se, Inverse video. Full screen editing.
Four-way cursor control with 29 keystroke graphics.
ATARI Personal Computers 1-11

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Atari 400 Specifications

General IconGeneral
ManufacturerAtari
Model400
TypeHome Computer
Release Year1979
CPUMOS Technology 6502
CPU Speed1.79 MHz
ROM10 KB
Operating SystemAtari OS
KeyboardMembrane keyboard
RAM8 KB (expandable to 48 KB)
GraphicsANTIC and GTIA chips
Sound4 channels
DisplayRF output for connection to TV
StorageOptional cassette tape drive or floppy disk drive
PortsCartridge
Display Resolution320x192 (16 colors)

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