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Microprocessor systems are working everywhere in our world. How
to build a microprocessor system prototype as soon as possible
is very important for the designers. But, the available CAD
tools can't help designers "design" microprocessor systems. Our
purpose is to raise the CAD tools up to "design" level, which
helps designers to design microprocessor system prototypes from
the system-level specification. In this paper, we proposed an
improved blackboard framework, called object-oriented
blackboard framework, which combines the advantages of object-
oriented design and blackboard framework. OOBF is an open
frameowrk, which can be applied to three kinds of softwares :
1. object-oriented knowledge base systems 2. distributed
problem-solving environments 3. integrating domain softwares
OOBF has the advantages of high openness and high effiency. We
apply the OOBF to develop an object-oriented knowledge base
system, which implements a microprocessor system design
environment successfully to support the following
functionalities : 1. object-oriented analysis of microprocessor
system design 2. construction of object-oriented design
knowledge base 3. construction of object-oriented device
library 4. open framework for problem-solving
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