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Atari 'Portfolio' technical specifications

Date of release End of 1989
CPU 80C88 (16bit internally, 8bit externally) / 4.9 MHz
ROM 256 KBytes
RAM 128 KBytes, expandable to 640 KBytes
Display Internal LC Display
Resolution 40 x 8 characters, 240 x 64 pixels
Colors monochrome (b/w)
MDA emulation
Sound 1 channel, mono
OS DIP-DOS 2.11 (MS-DOS 2.11 compatible), runs from ROM
Storage Internal card-drive
Interfaces Memory-Card slot
Peripheral port ('Portfolio Bus', 60 pins)
Physical dimensions 200 x 100 x 25 mm
Weight 454 grams (about 1 lb.), excl. batteries
Power supply 3 x AA / Mignon / LR6 size removable alkaline batteries
Memory preserved during battery changes
AC mains adaptor

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