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The Portfolio was one of the first, if not the first MSDOS compatible pocket computer. It was fully compatible with the IBM PC standard, although it was difficult to use software because of its very small screen.

Its card drive can accept :
- optional 32K, 64K or 128K memory (RAM) cards,
- 64K or 128K programmable (PROM) cards,
- 128K masked ROM cards,
- and 512K Flash Memory cards.

It had several built-in programs :
- Worksheet: Lotus 1-2-3 File-compatible spreadsheet,
- Text editor with basic word processing funtions,
- Calculator with five memories, four number formats and editable "tape" of calculations,
- Address book with virtually unlimited name and address storage and automatic phone dialing,
- Personal calendar/appointment book with programmable alarms,
- File transfer to upload and download files from compatible PC using optional Smart Parallel Interface,
- Clipboard to move or copy data within a file or between files or programs,
- and an operating system similar to MS-DOS 2.11

A lot of interfaces were developped for this computer including MIDI I/O.

Fun fact: This computer appeared in Terminator 2. It was used by young John Connor to break into an ATM bank machine.


Malcolm Ramage specifies:
While you have the machine down as originating from the US, the machine was developed by the UK firm known as DIPP, who developed the machine, but did not have the finance or ability to distribute it. As a result, Atari took on the distribution and manufacture of the device, while DIPP provided the groundwork for the new portable Atari's, STylus (ST Pad) and the ST Book.

TYPE  Pocket
YEAR  1989
KEYBOARD  Calculator-type keyboard, 63 keys
CPU  Intel 80C88
SPEED  4.9512 Mhz
RAM  128 kb (up to 640 kb)
ROM  256 kb
TEXT MODES  40 x 8 (Supertwist LCD display)
GRAPHIC MODES  260 x 64 dots
COLORS  Monochrome
SOUND  Beeper
SIZE / WEIGHT  7.8 x 4 .1 x 1.2 inches / 15.87 ounces with batteries
I/O PORTS  60 pin expansion bus, RAM Card port
OS  DIP-DOS (compatible with MS DOS 2.11)
POWER SUPPLY  3 AA alkaline batteries or optional AC adaptor
PERIPHERALS  32 KB and 128 KB RAM or ROM memory cards
PRICE  Unknown

retro computing t-shirts and goodies
3D Cubes
BASIC code
C64 maze generator
Pak Pak Monster
Pixel adventure
Pixel Deer
Ready prompt
Shooting gallery
Spiral program
Vector ship

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