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Do you think the nested FSM is a good design?

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EDA_hg81

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Do you think the nested FSM is a good design?

Thanks.
 

vlsi_whiz

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Well, that depends on the design. If you look at the PCI spec, you'd see that the arbitration scheme uses a nested state machine to service two levels of devices.
 

    EDA_hg81

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Iouri

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it is really depends what you trying to achieve, if you are concerning performance ie (speed) then no, if you are concerning code readability then it will help, also if you have a lot's of stages and speed is not an issue I would recommended to use small MCU something like 8051, or PICO blaze or MICO from lattice, also MCU, can take of a lot's other thinks in your design, just try to minimize processor-processor communication (if there are more then one) because multriprocessors system it is totally different world...
Good lack
 

    EDA_hg81

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Black Jack

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Hi!

Don`t forget about illegal states of FSM.
In multy-FSM design this promlem more complex.

Good Luck
 

    EDA_hg81

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EDA_hg81

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Thank you all for your suggestions.
 

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