ALDiSP: Synopsis

This language, developed in 1989-90, combines functional elements with a unique construct (the suspension) that enables the specification of asynchronous real-time algorithms.

This diagram illustrates the suspension evaluation mechanism, which lies at the core of the language and makes it unique amongst the languages.

[picture of suspension evaluation;
4k GIF]

A suspension is a kind of functional interrupt. Evaluating a suspension installs an ``interrupt handler'' (an arbitrary expression) that is triggered by a condition (another arbitrary expression, usually referring to the system's I/O state) and has to be executed within a fixed time frame.

ALDiSP: Documents

These are the reports written about ALDiSPš and its compilation.

``Entwurf und Spezifikation einer funktionalen Programmiersprache für die speziellen Erfordernisse der digitalen Signalverarbeitung''. Diplomarbeit. Only available in limited edition (= you'll have to come around my room to copy my own exemplar).˛
``ALDiSP - eine applikative Programmiersprache für Anwendungen in der digitalen Signalverarbeitung''; published as FB20 TR 1990/9. I have still some copies around. If interested, mail me and I'll send you one.
``The Real-Time Programming Language ALDiSP-0: Informal Introduction and Formal Semantics''; TR 92-26. I have still some copies around. If interested, mail me and I'll send you one.ł