factored out 16-bit VMACU segments into clamp mode
factored out 16-bit VMACU segments into clamp mode

8l/rsp,mupen64plus/mupen64plus-rsp-cxd4,8l/rsp,8l/rsp,mupen64plus/mupen64plus-rsp-cxd4,mupen64plus/mupen64plus-rsp-cxd4