Intel 80C186XL, 80C188XL user manual Add, ADD dest, src, Logical, Dest, src

INSTRUCTION SET DESCRIPTIONS

Table C-4. Instruction Set (Continued)

Name	Description	Operation	Flags
			Affected
ADD	Addition:	(dest) ← (dest) + (src)	AF
	ADD dest, src		CF
			DF –
	Sums two operands, which may be
			IF –
	bytes or words, replaces the
			OF
	destination operand. Both operands
			PF
	may be signed or unsigned binary
			SF
	numbers (see AAA and DAA).
			TF –
	Instruction Operands:
			ZF ¸
	ADD reg, reg
	ADD reg, mem
	ADD mem, reg
	ADD reg, immed
	ADD mem, immed
	ADD accum, immed
AND	And Logical:	(dest) ← (dest) and (src)	AF ?
	AND dest, src	(CF) ← 0	CF
		(OF) ← 0	DF –
	Performs the logical "and" of the two
			IF –
	operands (byte or word) and returns
			OF
	the result to the destination operand. A
			PF
	bit in the result is set if both corre-
			SF
	sponding bits of the original operands
			TF –
	are set; otherwise the bit is cleared.
			ZF ¸
	Instruction Operands:
	AND reg, reg
	AND reg, mem
	AND mem, reg
	AND reg, immed
	AND mem, immed
	AND accum, immed

NOTE: The three symbols used in the Flags Affected column are defined as follows:

–the contents of the flag remain unchanged after the instruction is executed ¸? the contents of the flag is undefined after the instruction is executed

the flag is updated after the instruction is executed

C-6