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===PSDL===
PSDL is a prototype description language to describe real-time software.<ref>{{cite journal|last=Luqi|author2=Berzins, Yeh |title=A Prototyping Language for Real-Time Software|journal=IEEE Transactions on Software Engineering|date=October 1988|volume=14|issue=10|pages=1409–1423|doi=10.1109/32.6186|hdl=10945/39162 }}</ref>
The associated tool set is CAPS (Computer Aided Prototyping System).<ref>{{cite journal|last=Luqi|author2=Ketabchi |title=A Computer-Aided Prototyping System|journal=IEEE Software|date=March 1988|volume=5|issue=2|pages=66–72|doi=10.1109/52.2013|hdl=10945/43616 }}</ref>
Prototyping software systems with hard real-time requirements is challenging because timing constraints introduce implementation and hardware dependencies.
PSDL addresses these issues by introducing control abstractions that include declarative timing constraints. CAPS uses this information to automatically generate code and associated real-time schedules, monitor timing constraints during prototype execution, and simulate execution in proportional real time relative to a set of parameterized hardware models. It also provides default assumptions that enable execution of incomplete prototype descriptions, integrates prototype construction with a software reuse repository for rapidly realizing efficient implementations, and provides support for rapid evolution of requirements and designs.<ref>{{cite journal|last=Luqi|title=Software Evolution through Rapid Prototyping|journal=IEEE Computer|date=May 1989|volume=22|issue=5|pages=13–25|doi=10.1109/2.27953|hdl=10945/43610}}</ref>
== See also ==
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