|
System unit |
Description |
Processor |
|
Clock speed |
1.79 MHz (NTSC) 1.77 MHz (PAL) |
RAM |
16 KB |
ROM |
24 KB (16 KB for OS, 8 KB for Atari BASIC) |
O.S. version(s) |
XL O.S. |
Built-in software |
Self-Test, Basic Revision B (later models have Basic Revision C) |
Parallel Bus Interface |
No |
Colors |
16 colors with 16 intensity level each |
Sound |
4 voices, 3.5 octaves (POKEY chip) |
Text modes |
Five text modes, maximum: 40 columns x 24 lines |
Graphics modes |
11 graphic modes, maximum: 320 x 192 pixels |
Co-processor |
GTIA (video), POKEY (Sound, I/O), ANTIC (Video) |
Keyboard |
Mechanical keyboard Function keys (Reset, Option, Select, Start, Help) |
I/O ports |
Composite video output, Cardridge port (1 Adress space : 16 KB), Expansion port, SIO peripheral port (tape, disk, printer, modem), 2 x joystick connectors |
Size / Weight |
|
Build-in media |
None |
Power supply |
External power supply unit |