Atari  Atari Portfolio
ata_palm

Introduction

The Atari Portfolio (Atari PC Folio) is an IBM PC-compatible palmtop PC, released by Atari Corporation in June 1989. It is the world's first palmtop computer.

In 1989 DIP Research Ltd. developed the DIP Pocket PC. DIP licensed this product to Atari for sale as the Portfolio in the UK and the US. In Spain and Germany the computer was marketed as the PC Folio. DIP stood for Distributed Information Processing but it is also rumored that it stands for David, Ian and Peter the three founding members of the DIP company.

The Portfolio is based on the Intel 8088 architecture and uses a 80C88 CPU clocking in at slightly under 5MHz. The machine runs the DIP DOS operating system which is largely compatible with MS-DOS 2.11. The machine has 128KByte of RAM, and 256KByte ROM that has the OS and some applications built in. The RAM is divided between system memory and local storage (the "C: drive"). An LCD monochrome display provides 240x64 pixesls, or 40x8 characters of text. The display has no back-light. Sound is provided by a small dual tone multi frequency speaker that can simulate telephone tones so users could dial phone numbers by holding the hand-set of a telephone to the speaker.

The Portfolio uses three AA size removable alkaline batteries and memory is preserved during battery changes. This allowed a user to carry additional batteries for extended use. A power supply unit was also available for charging and running the machine.

Various accessories were created for the machine, such as memory expansions, serial and parallel interfaces, memory cards, PC Card drive, and more. ROM would be upgraded resulting in various versions of the Portfolio with different ROM versions.

Intel 8088 CPU

The Intel 8088 microprocessor is a variant of the Intel 8086. The 8088 has an 8-bit external bus instead of the 16-bit bus that the 8086 has. The 16-bit registers and the 1MByte address range are unchanged, however. The 8086 and the 8088 have the same execution unit (EU), only the Bus Interface Unit (BIU) differs.

The original IBM PC architecture is based on the Intel 8088. The CPU runs at 5 to 16 MHz, has a 20-bit address bus and can work together with the 8087 Co-Processor. The 8088 was launched in 1979. The 8088 is compatible with the Intel 8085.

Released 1989 Country United States Brand Type ATARI Portable Name Atari Portfolio CPU Class 8088 CPU 80C88 @4.9152MHz Memory 128kB RAM Sound Chip none Sound Dual tone speaker Display Chip none Display 40x8 text, 240x64 monochrome graphics Sprites none System OS DIP DOS 2.11 (MS-DOS 2.11 compatible) Storage RAM Drive Original Price US $400
Related Systems
 
Atari 400/800
 
Atari XL/XE
 
Atari Portable
 
Atari  Portfolio (1989)
 
Atari Portable ST
 
Atari ST
 
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Books & Publications
 
6502 CPU
Collection of books on the 6502 and compatible CPUs
 
Atari 8-bit
Programming and other books for the 8-bit Atari line (400/800/XL/XE) of computers.
Magazines & Serials
 
Analog Computing
A.N.A.L.O.G. Atari Newsletter And Lots Of Games
 
Antic Catalog
Antic Software and merchandise Catalog, later rebranded to just The Catalog
 
Antic Magazine
Antic was a magazine devoted to the Atari 8-bit family of home computers and the 16-bit Atari ST.
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Atari 5200
A collection of technical and service manuals for the Atari 5200 game system.
 
Atari Software
Software Catalogs for the Atari computers
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Atari 5200 Games
A collection of Game Manuals for the Atari 5200 game system.
World Wide Web Links
 
Atari.Com
Official Atari website
 
Best Electronics
Specializing in Replacement Parts and Accessories for all Consumer Based Atari Game Systems and Atari Computers.
 
Atari Age
Fan website for Atari Game Consoles (2600, 5200, 7800, Lynx, Jaguar). Some home-brew 800 and XE games and hardware in the AtariAge Store.