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Title: Flag condition handling and branch assignment for large microcoded controllers
Authors: Kifli, A
Dewulf, R
Zegers, J
Goossens, M
Six, P
De Man, Hugo #
Issue Date: 1993
Publisher: Elsevier science bv
Series Title: Ifip transactions a-computer science and technology vol:22 pages:61-71
Abstract: Typical control flows for real-time ASICs exhibit complex decision making, and therefore require extensive flag/condition handling and branching. The logic implementation of this part of the controller often requires an excessive amount of silicon area and limits the throughput of the controller and consequently of the complete ASIC. In this paper, we present novel methods for improving these area and timing characteristics in large microcoded controllers, based on their functional characteristics encountered in typical examples. For the flag and condition handling logic, we use the fact that many flags are needed simultaneously for efficient complex branching and that these are used at different timesteps and thus have a very long lifetime. For the branch generation, we observe that the complexity of the sequencer can be reduced best by use of an incrementer.
URI: 
ISSN: 0926-5473
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Electrical Engineering - miscellaneous
# (joint) last author

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