CMP	src, dest

dest <  src	LT	CS	src >= dest	; CS = LO
dest <= src	LE	LS	src >  dest
dest == src	EQ	EQ	src == dest
dest != src	NE	NE	src != dest
dest >  src	GT	HI	src <= dest
dest >= src	GE	CC	src <  dest	; CC = HE
      signed ---^	^--- unsigned

	TST	dest

dest == 0	EQ
dest != 0	NE
dest <  0	MI
dest >= 0	PL

	BTST	bit, dest

bit == 1	NE
bit == 0	EQ