FLEX Operating System User's Manual

Donor:  Anonymous

FLEX Operating System User's Manual, copyrighted in 1979 by Technical Systems Consultants, Inc.

The FLEX OS is a three part OS for 8 inch floppy disks.

  • the File Management System
  • the Disk Operating System
  • the Utility Command Set.

The FLEX Operating System was designed for the 6809 CPU (Central Processing Unit) chip. System requirements inlcuded

  • 12K random access memory (RAM) with specific memory accresses
  • additional main memory (48K) making 56K memory total
  • When running, the operating system occupied the top 12K of memory (addresses 48K to 56K)
  • 2 disk drives, connected to a controller and addressed as drive #0 and drive #1

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