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area(csr): fix intr NO bits and remove reg for waddr/wdata #3970
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area(csr): reduce CSR area
area(csr): intr NO bits is reduced from 64 to 8
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area(csr): intr NO bits is reduced from 64 to 8
area(csr): fix intr NO bits and remove 1 cycle for waddr/wdata
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area(csr): fix intr NO bits and remove 1 cycle for waddr/wdata
area(csr): fix intr NO bits and remove reg for waddr/wdata
Dec 9, 2024
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Currently we support 61 major interrupts, and 8 bits are sufficient.
There is no need to use 64 bits to store the intermediate data of the
interrupt NO
.In order to save area, we only need to add 1 cycle to
wen
, notwaddr
andwdata
.