nuclei-sdk/tools/scripts/nsdk_cli/configs/cpu/pico/ux900.json

{
    "build_config": {
        "CPU_SERIES": "900"
    },
    "build_configs": {
        "rv64imafdcb": { "CORE": "nx900fd", "ARCH_EXT": "_zba_zbb_zbc_zbs" }
    }
}