Interactive Application System

The Interactive Application System (usually referred to with the acronym, IAS) was an operating system from DEC for the PDP-11. It could be generated to produce three different types of systems:

• time-sharing
• multi-user (similar to the above, but does not "offer the protection facilities of [the] timesharing system")
• real-time

It was based on RSX-11D, and initially produced for the then-planned PDP-11/70. It was the first system to support Digital Command Language (DCL).

External links

• IAS - documentation at Bitsavers
  • Software Product Description - IAS, Version 3.4 (SPD 14.65.18)
  • IAS System Management Guide (AA-2520F-TC) - includes a good overview
• The IAS Home Page - interesting notes from a developer