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VolksForth MS-DOS for Atari Portfolio

The Atari Portfolio is a portable, MS-DOS compatible palmtop computer released by Atari in 1989 (https://en.wikipedia.org/wiki/Atari_Portfolio).

The Portfolio uses an Intel 80C88 CPU running at 4.9152 MHz and runs "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 DOS 3.xx. It has 128 KB of RAM and 256 KB of ROM which contains the OS and built-in applications. The on-board RAM is divided between system memory and local storage (the C: drive). The LCD is monochrome without backlight and had 240×64 pixels or 40 characters × 8 lines.

Files:

  • pofo.fb - Atari Portfolio System Enhancements
  • pofo.vid - Atari Portfolio Video Driver (for 40x8 line display)
  • pofo.sys - load file to generate a full VolksForth for the Atari Portfolio
  • kernel.com - Vanilla VolksForth Kernel
  • pofo4th.com - VolksForth for Atari Portfolio