ENTITY dp_sff_scan_x4_buf IS PORT ( ck : in BIT; wen : in BIT; scan : in BIT; scin : in BIT; ckx : out BIT; nckx : out BIT; wenx : out BIT; nwenx : out BIT; scanx : out BIT; nscanx : out BIT; scout : out BIT; vdd : in BIT; vss : in BIT ); END dp_sff_scan_x4_buf; ARCHITECTURE vbe OF dp_sff_scan_x4_buf IS BEGIN ASSERT (vdd and not (vss)) REPORT "power supply is missing on dp_sff_scan_x4_buf" SEVERITY WARNING; ckx <= ck; nckx <= not ck; wenx <= wen; nwenx <= not wen; scanx <= scan; nscanx <= not scan; scout <= scin; END;