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Control dominated design

7/14/2012 03:16 PM EDT
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cardinalsin
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re: Control dominated design
cardinalsin   7/24/2012 4:47:01 PM
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"So, what exactly is a control-dominated design?" is a good question. The examples here are impressive -- but they're examples of control within a single-threaded computation. Hardware design gets really difficult only when there are concurrent FSMs that have complex interactions. Specifically, control logic is hard to write and get right due to having to schedule/manage/arbitrate the accesses by multiple different, concurrent operations for common resources (e.g. memory ports, FIFOs, registers, DMA channels, etc.). This is where C++ with threads is a bad model for expressing concurrency. And, it's not clear from these examples what SystemC offers over RTL for managing these types of problems. It would be great to see examples like this too. George Harper, Bluespec, Inc.

DrFPGA
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re: Control dominated design
DrFPGA   7/23/2012 6:00:59 PM
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It seems to me that we need a new approach to control definition. Can't we find a way to use a still higher level approach and avoid this level of detail? Then we could get real productivity gains.

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