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Re: [f-cpu] freeze signal


>De: <nicolas.boulay@ifrance.com>

>Is it possible to add a signal to the entities to
>completly freeze its output. It's different from
>enable. The freeze signal must stop the pipeline or
>at least the output port of the unit, no new data
>should get out in the result port. 
>We absolutely need this kind of stuff to handel unit
>with a latency more than 1 (to manage the fact to
>have 2 data could be ready in the same time)
>Any comment ?

it's useless : writeback hazards are detected at decode/issue stage.
No instruction is issued (that is : freeze at decode) when we detect that
we won't be able to writeback in the future.

hope this refreshes some memory :-)


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