[Bug report] Performance counters are not writable

YosysHQ / picorv32

PicoRV32 - A Size-Optimized RISC-V CPU

ISC License

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[Bug report] Performance counters are not writable #236

Open flaviens opened 1 year ago

flaviens commented 1 year ago

Hi there!

The (privileged) spec specifies that the cycle and instructions are writable in machine mode. Currently, they are read-only on picorv32, whatever the configuration.

Thanks! Flavien