Atari also designed this IBM compatible system named the ABC, however is was so rare that I never seen one.
This image is from an advertisement for a UK Atari dealer.
Back in 1990, during the IBM XT/AT era, processor technology was the Intel 80286 CPU, when this was designed.This Atari ABC system offered AT performance at XT prices. Atari didn't pursue this system for long, perhaps because so many other companies were also making IBM clones and Atari engineers couldn't be as innovative with this, they preferred to be leaders of technology and not followers.
technical specs:
CPU: 8 Mhz Intel 80286 16-bit
NEAT (New Enhanced AT) technology chip set
640K RAM base memory expandable to 4Mb
Real time clock with battery back-up
Socket for 80287-8 numeric co-processor
3 16-bit AT expansion slots
internal RLL hard disk and 3½" HD floppy drive, max. capacity 2 each
EGA or optional Super VGA graphics
Atari Portfolio is the world's first palmtop MS-DOS compatible computer. About the size of a VCR tape, and weighs less than a pound. Immediately after switching on, intergrated software programs are accessible: Lotus 123 compatible spreadsheet, MS-Word compatible Text editor, Calculator, Address book with phone dialer, and Diary
The liquid-crystal display screen uses supertwist technology to offer 8 lines of 40 columns which can be windowed into a full-sized virtual PC screen.
Parallel interface module uploads and downloads files between Portfolio and a desktop PC, controls parallel printers, etc. Also has a serial module for modems and serial printers. Integrated PC Card Drive for reading and writing to memory cards (no floppy drive), credit-card sized memory cards in 32K, 64K, and 128K capacity. Optional internal 20Mb hard disk drive was available.
Atari portable systems - 1990 -JPG image 59K
Advertisement page for Portfolio -JPG image 189K
did you notice: In Terminator 2, young John Connor used a Portfolio