ENTITY rf_fifo_orand4 IS
PORT (
  a0        : in  BIT;
  b0        : in  BIT;
  a1        : in  BIT;
  b1        : in  BIT;
  rippleout : out BIT;
  vdd	    : in  BIT;
  vss       : in  BIT
);
END rf_fifo_orand4;

ARCHITECTURE VBE OF rf_fifo_orand4 IS

BEGIN
  ASSERT (vdd and not (vss))
  REPORT "power supply is missing on rf_fifo_orand4"
  SEVERITY WARNING;

  rippleout <= (a0 and b0) or (a1 and b1);

END;