Creating new instructions in RISC-V - Printable Version +- PULP Community (https://pulp-platform.org/community) +-- Forum: PULP's Community forum (https://pulp-platform.org/community/forumdisplay.php?fid=1) +--- Forum: PULP General questions (https://pulp-platform.org/community/forumdisplay.php?fid=2) +--- Thread: Creating new instructions in RISC-V (/showthread.php?tid=293)

Creating new instructions in RISC-V - teotro - 07-06-2022 Hi everyone, I am new in RISC-V and I am using Pulpissimo. Is there somewhere a tutorial of how to create new custom instructions in RISC-V? For instance, a "mod" instruction. What are the steps to do it? Thank you in advance, Theodoros RE: Creating new instructions in RISC-V - bluewww - 07-08-2022 If you are asking for a full tutorial how to do this then no we don't have such a thing. I would look into the cv32e40p core and look into the id stage (where instructions are decoded) and ex stage (where instructions are executed) to get started. Maybe try to trace/follow the signals belonging to an already implemented instruction for example "add".