The SiFive S21 is a 64-bit (RV64) core of the SiFive S2 series cores, designed by SiFive.
Minimum required J-Link software version
The S21 and S21ARTY device selection are supported since V7.22 of the J-Link software.
S21ARTY device selection
The S21ARTY is a special device that can be selected for J-Link. It selects the standard SiFive S21 that is implemented for the sample bitstream as part of the SiFive S21 Standard Core Dev Kit. Device specifics include:
- Memory map
- Flash banks
As the S21 is a customizable core, the S21ARTY selection may not be appropriate for customized cores but for the standard one running on the ARTY-100T FPGA evaluation board only.
As the core does not support System Bus Access (SBA), RTT is not supported for this core.
As the core does not support System Bus Access (SBA), HSS is not supported for this core.