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Parallella Community • View topic - Register File Number of Read and Write Ports

Register File Number of Read and Write Ports

Any technical questions about the Epiphany chip and Parallella HW Platform.

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Register File Number of Read and Write Ports

Postby Fabian » Tue Sep 27, 2016 6:50 pm

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Re: Register File Number of Read and Write Ports

Postby jar » Tue Sep 27, 2016 7:57 pm

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Re: Register File Number of Read and Write Ports

Postby Fabian » Tue Sep 27, 2016 8:24 pm

Its a very good post. The dual-issue scheduling allows 2 instructions to be executed simultaneously. But they can only be executed in parallel if one is computed by the FPU and the other by the IALU. So definitely my suggested 4 write and 7 read ports seem to be a scenario that can never happen.
Thanks again and lets see whether someone can show us the magic instructions to do all the above mentioned operations 8-)
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Re: Register File Number of Read and Write Ports

Postby aolofsson » Fri Sep 30, 2016 4:37 pm

Postmodify load adds another write port...also used for other stuff..
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