search

lowRISC / lowrisc-chip

The root repo for lowRISC project and FPGA demos.
http://www.lowrisc.org/
Other
596 stars 148 forks source link

ISA Version #48

Closed sxu55 closed 7 years ago

sxu55 commented 7 years ago

May I ask what version of RISCV ISA does this chip support? (e.g. the latest version is spec2.2 on UCB RISCV website, but I believe this chip is derived from an older repo and maybe only support older specs)

Thanks!

wsong83 commented 7 years ago

I think it support the v2.2 RV64G. User spec has been freezed for a long time so the old code is not that old in this sense.

jrrk commented 7 years ago

The main thing that is missing relative to the latest specification is compressed instructions. This option is default in the latest gcc which is one of the reasons why we have stuck to an older version for now.

Sent from my iPhone

On 3 Jun 2017, at 07:42, Wei Song notifications@github.com wrote:

I think it support the v2.2 RV64G. User spec has been freezed for a long time so the old code is not that old in this sense.

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

sxu55 commented 7 years ago

I see. Thanks for the answer!