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Branching Program-Based Programmable Logic for Embedded Systems

Authors:
Václav Dvořák

Keywords: Boolean functions; multi-terminal binary decision diagrams MTBDDs; branching programs; MTBDD complexity; decision diagram machines DDMs

Abstract:
The paper considers realization of logic functions by branching programs running on special purpose Decision Diagram Machines (DDMs). It is not the fastest way to implement logic, but it enables different versions and frequent modifications, e.g., in embedded systems. First, this paper derives upper bounds on the cost of multi-terminal binary decision diagrams (MTBDDs); the cost is directly related to the size of branching programs derived from MTBDDs. Second, optimization of heterogeneous branching programs is undertaken that makes a space-time trade-off between the amount of memory required for a branching program and its execution time. As a case study, optimal configurations of branching programs are found for a set of benchmark tasks. Beside DDMs, the technique can also be used for micro-controllers with a support for multi-way branching running logic-intensive embedded firmware.

Pages: 109 to 115

Copyright: Copyright (c) IARIA, 2012

Publication date: February 29, 2012

Published in: conference

ISSN: 2308-4243

ISBN: 978-1-61208-184-7

Location: Saint Gilles, Reunion

Dates: from February 29, 2012 to March 5, 2012