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Index
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Model:
Atari 800
Release Date:
November 1979
Original Price:
$1000
Processor:
6502 1.79 MHz
Memory:
16 KB RAM / 10 KB ROM
Yet another system that we no longer own, for one reason or another...
Found a complete system at a local HamFest (well, somewhat local) this
past weekend for $10! It came with the computer (of course!), floppy
disk drive, some ham radio interface box, the power supplies and
manuals for all three units, two BASIC programming cartridges and two
additional 16K RAM cards (for a total of 48K RAM). I haven't tried
the disk drive yet, but the only problem with the computer itself was
the keyboard didn't respond. All that took was taking the keyboard
apart and cleaning the key switch contacts. All in all, I'd say it
was a pretty good deal.
I can tell you that the shielding in this thing is amazing. Thick
aluminum surrounding most of the circuitry makes for a pretty
effective Faraday cage!
Available peripherals included the standard arsenal of devices for
it's time - floppy disk drive, data cassette recorder, acoustically
coupled modem, standard (more modern by today's standards) plug in
modem, dot-matrix printer, RS232 interface, external numeric keypad,
joysticks and paddle controls. Software came in the form of a floppy
disk, a cassette tape or a plug in cartridge (the 800 had two
cartridge ports whereas the 400 only had one).
>>
Click here to download the Owner's Guide (7.12 mb)
>>
Click here to download the Field Service Manual (3.2 mb)
>>
Click here to download a Complete Game List
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Pinouts:
Monitor Port
Pin 1 --> Composite Luminance
Pin 2 --- Ground
Pin 3 --> Audio Output
Pin 4 --> Composite Video
Pin 5 --> Composite Chroma
Joystick Port
Pin 1 <-- Up
Pin 2 <-- Down
Pin 3 <-- Left
Pin 4 <-- Right
Pin 5 <-- Potentiometer Input on Paddle B
Pin 6 <-- Button
Pin 7 --> +5vdc for Paddles
Pin 8 --- GND
Pin 9 <-- Potentiometer Input on Paddle A
Serial Input/Output Port
Pin 01 <-- Clock Input
Pin 02 --> Clock Output
Pin 03 <-- Data Input
Pin 04 --- Ground
Pin 05 --> Data Output
Pin 06 --- Ground
Pin 07 ??? Command (active low)
Pin 08 --> Motor Control
Pin 09 ??? Proceed (active low)
Pin 10 --> +5dvc/Ready
Pin 11 <-- Audio Input
Pin 12 --> +12vdc
Pin 13 ??? Interrupt (active low)
Power Supply - 9vac 3.5a
All Pin-Outs Are Courtesy of
the Hardware Book Project
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Atari