|Dimensions||1525μm x 1525μm|
|Power||93 mW, 166MHz 1.8V|
While in Halley the program has to be written in custom assembly, in this chip standard GNU programming tools can be used. When compared to Or10n, Sir10us contains a larger instruction memory and a smaller data memory.
Accelerating the Open-RISC with the co-processor speeds up signature verification according to ECDSA by a factor of 15 with respect to a portable C implementation. Verification on the co-processor is not only faster but also cuts energy dissipation by a factor of 21.
The logo is a word play between Sirius which is an astronomical term just like Halley and Orion and the famous quote from the movie Dark Knight: "why so serious?".