> The misa CSR is a WARL read-write register reporting the ISA supported by the hart [hart is a hardware thread] - from the Privileged Architecture manual Howe

> The misa CSR is a WARL read-write register reporting the ISA supported by the hart [hart is a hardware thread] - from the Privileged Architecture manual However, I didn't see how a nonstandard extension such as this would be represented; this is concerned with representing up to 26 or so extensions, the ones with single letters assigned to them.