Atari Portfolio

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Atari Portfolio

Type	Subnotebook
Release date	1989
Operating system	DIP DOS 2.11
Power	3 x AA size removable alkaline batteries (Optional AC adapter) [1]
CPU	80C88 @ 4.9152 MHz
Memory	128 KB of RAM and 256 KB of ROM

The Atari Portfolio was an early PC-compatible palmtop computer, released by Atari Corporation in 1989.^[2]

History

Distributed Information Processing (DIP) based in Guildford, Surrey, UK released a product in the UK called the DIP Pocket PC in 1989. Soon after its release, DIP licensed this product to Atari for sale as the Portfolio in the UK and US.^[3] DIP officially stood for "Distributed Information Processing", although secretly it actually stood for "David, Ian and Peter", the three founding members of the company, all ex-Psion.^[3] The original founder of the company (first called "Crushproof Software") was Ian Cullimore, and the other two David Frodsham and Peter Baldwin.^[2] Ian Cullimore was involved in designing the early Organiser products at Psion before the DIP Pocket PC project.

Technology

It was built around an Intel 80C88 CPU running at 4.9152 MHz and ran "DIP Operating System 2.11" (DIP DOS), an operating system mostly compatible to MS-DOS 2.11, but with some DOS 2.xx functionality lacking and some internal data structures more compatible with MS-DOS 3.xx. It had 128 KB of RAM and 256 KB of ROM which contained the OS and built-in applications. The on-board RAM had to be divided between system memory and local storage (the C: drive). The LCD was monochrome without backlight and had 240x64 pixels or 40 characters x 8 lines.

Power was supplied by three AA size removable alkaline batteries. The computer's memory was preserved during battery changes. There was also an optional AC adapter.^[1]

There was an expansion port on the right side of the computer for parallel, serial, modem or MIDI expansion modules. It used a card expansion port for removable memory, which was not compatible with PC card as it predated that standard. Expansion cards were available in sizes of 32, 64, and 128 KB initially, and later were available in capacities up to 4 MB. The expansion cards were backed up by a replaceable battery, which lasted approximately two years. Built-in applications included a text editor, spreadsheet (Lotus 1-2-3 compatible), phone book and time manager. Expansion cards contained programs such as a chess game, a file manager, and a finance manager. Most text-based MS-DOS applications could be run on the Portfolio as long as they did not directly access the hardware and could fit into the small memory.

Other expansion modules included a floppy drive, and a memory expansion unit. The memory expansion unit gave the Portfolio an additional 256 KB of RAM, which can be partitioned into several drives. It also featured a pass-through expansion connector, allowing the use of more than one expansion unit. In theory, multiple memory expanders can be attached, increasing the available storage to over 640 KB.

There was also a card reader available that connected to a desktop PC to read and write to the expansion cards. The kit contained an ISA card, a special cable, the card reader, and software distributed on floppy disk.

A modem expansion module was available which converted the portfolio into a miniature computer terminal. The modem was powered from the portfolio and came with an acoustic coupler consisting of two round shells that could be mounted over both ends of a handset with the aid of velcro strips. A direct connection to a telephone with a standard telephone lead was also possible. The complete terminal and coupler were portable weighing only a few hundred grammes.^[4]

Also, using the parallel port expansion module, a standard parallel cable and the software supplied (DOS based), the Portfolio can be connected to a PC for transferring files to and from the unit.

Credits for the development of the product can be found in the "back door" on the Portfolio — go into Setup, then Help, then press Alt+[ ("Alt" plus "left square bracket").

Legacy

The Portfolio still enjoys some popularity today.^{[citation needed]} Many people value them for their strict simplicity and lack of unnecessary features. In addition, several hacks have been made for the Portfolio, including an accessory that allows the use of an electroluminescent backlight on the unit.

Another interesting hack is the Portfolio Compact Flash modification. By modifying the RAM card slot and fitting a CF-socket and a small circuit (a 74 series chip and a bit of buffering) CF cards can be used (albeit in partitions no larger than 32 MB each due to limitations of the ROMed DOS).

Atari Portfolio in pop culture

The Portfolio appears in the film Terminator 2: Judgment Day, where it is used by the young John Connor to bypass security on an ATM with a ribbon cable connecting the Portfolio's parallel interface to a magstripe card. This setup also appears a second time in the movie, when John uses it in the Cyberdyne Systems lab to retrieve the key to the vault containing the arm and CPU of the first Terminator.^[5]

See also

• Poqet PC
• Poqet PC Prime
• Poqet PC Plus
• HP 95LX
• HP 100LX
• HP 200LX
• HP 1000CX
• HP OmniGo 700LX

References

External links

• Unofficial Atari Portfolio site
• Portfolio FAQ
• Scanned Atari Portfolio Technical Reference Guide
• Video demonstration of Atari Portfolio on Youtube

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