Intel 80C188XL, 80C186XL user manual Load Pointer Using ES, LES dest, src, Lock the Bus

INSTRUCTION SET DESCRIPTIONS

Table C-4. Instruction Set (Continued)

Name	Description	Operation	Flags
			Affected
LES	Load Pointer Using ES:	(dest) ← (EA)	AF –
	LES dest, src	(ES) ← (EA + 2)	CF –
			DF –
	Transfers a 32-bit pointer variable from
			IF –
	the source operand to the destination
			OF –
	operand and register ES. The offset
			PF –
	word of the pointer is transferred to the
			SF –
	destination operand. The segment
			TF –
	word of the pointer is transferred to
			ZF –
	register ES.
	Instruction Operands:
	LES reg16, mem32
LOCK	Lock the Bus:	none	AF –
	LOCK		CF –
			DF –
	Causes the 8088 (configured in
			IF –
	maximum mode) to assert its bus
			OF –
	LOCK signal while the following
			PF –
	instruction executes. The instruction
			SF –
	most useful in this context is an
			TF –
	exchange register with memory.
			ZF –
	The LOCK prefix may be combined
	with the segment override and/or REP
	prefixes.
	Instruction Operands:
	none

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-27