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| (click on picture) |
| Introduced | January 5, 1985 |
| Discontinued | Late in 1987 |
| Release Price |
| System Architecture | Memory | |||
| Microprocessor | WDC 6502C | Standard on system board | 64k | |
| Clock speed | 1.79 MHz | Maximum on system board | 64k | |
| Bus type | Atari proprietary | Maximum total memory | 64k | |
| Data bus width | 8 - bits | Memory speed and type | ||
| Address bus width | 16 - bits | System board memory socket type | ||
| Interrupt levels | N/A | Number of memory module sockets | ||
| DMA channels | N/A | Memory used on system board | ||
| Standard Features | Disk Storage | |||
| ROM size | 24k | Internal disk and tape drive bays | none | |
| Optional math coprocessor | no | Standard floppy drives | Optional | |
| Parallel port type | no | Optional floppy drives: | up to 4 | |
| RS232C serial ports | yes | * 5 1/4 inch 160k | yes | |
| Mouse ports | yes / shared joystick | * 5 1/4 inch 1.2MB | no | |
| UART chip used | N/A | * 3 1/2 inch 720k | no | |
| Maximum speed | N/A | * 3 1/2 inch 1.44MB | no | |
| CMOS real time clock | no | * 3 1/2 inch 2.88MB | no | |
| CMOS RAM | no | Hard disk controller included | no | |
| Video & Graphics | Sound | |||
| Graphics Processor | Antic / GTIA | Sound Interface device | Pokey | |
| Screen size - Col x Rows | 40 x 24 | Sound generation | 4 voices | |
| Resolution - Colors/High | 16 / 320 x 192 | ADSR capable | no | |
| Resolution - Colors/Low | 128 / 40 x 24 | |||
| Max colors | 256 | Programming Language | ||
| Sprites or Missiles | 4 | Built in language | Atari BASIC | |
| Built in M L monitor | no | |||
| Expansion Slots | Keyboard Specs. | |||
| Total adapter slots | 1 external bus slot | Number of keys | 62 / full stroke | |
| Number of 8/16/32 bit slots | 0 / 0 / 0 | Upper/lower case | yes / yes | |
| I/O | 2-joystick ports | Keyboard cable length | N/A | |
| I/O | 1-RF output to TV | |||
| I/O | 1-13 pin serial port | |||
| I/O | 1-cartridge slot | |||
| Physical Specs. | Environmental Specs. | |||
| * Height | Operating voltage @ 60 Hz | 120 VAC | ||
| * Width | Maximum power supplied | |||
| * Depth | Power supply output - volts | |||
| * Weight | Power supply output - amps |