Intel 80C188XL Instruction Set Opcodes And Clock Cycles, ARITHMETIC INSTRUCTIONS Continued

INSTRUCTION SET OPCODES AND CLOCK CYCLES

Table D-2. Instruction Set Summary (Continued)

Function		Format			Clocks	Notes
ARITHMETIC INSTRUCTIONS (Continued)
AAM = ASCII adjust for multiply
	1 1 0 1 0 1 0 0	0 0 0 0 1 0 1 0			19
DIV = Divide (unsigned)
	1 1 1 1 0 1 1 w	mod 110 r/m
register-byte					29
register-word					38
memory-byte					35
memory-word					44
IDIV = Integer divide (signed)
	1 1 1 1 0 1 1 w	mod 111 r/m
register-byte					29
register-word					38
memory-byte					35
memory-word					44
AAD = ASCII adjust for divide
	1 1 0 1 0 1 0 1	0 0 0 0 1 0 1 0			15
CBW = Convert byte to word
	1 0 0 1 1 0 0 0				2
CWD = Convert word to double-word
	1 0 0 1 1 0 0 1				4
BIT MANIPULATION INSTRUCTIONS
NOT= Invert register/memory
	1 1 1 1 0 1 1 w	mod 010 r/m			3
AND = And
reg/memory and register to either
	0 0 1 0 0 0 d w	mod reg r/m			3/10
immediate to register/memory
	1 0 0 0 0 0 0 w	mod 100 r/m	data	data if w=1	4/16
immediate to accumulator
	0 0 1 0 0 1 0 w	data	data if w=1		3/4	(1)
OR = Or
reg/memory and register to either
	0 0 0 0 1 0 d w	mod reg r/m			3/10
immediate to register/memory
	1 0 0 0 0 0 0 w	mod 001 r/m	data	data if w=1	4/10
immediate to accumulator
	0 0 0 0 1 1 0 w	data	data if w=1		3/4	(1)
XOR = Exclusive or
reg/memory and register to either
	0 0 1 1 0 0 d w	mod reg r/m			3/10
immediate to register/memory
	1 0 0 0 0 0 0 w	mod 110 r/m	data	data if w=1	4/10
immediate to accumulator
	0 0 1 1 0 1 0 w	data	data if w=1		3/4	(1)

NOTES:

1.Clock cycles are given for 8-bit/16-bit operations.

2.Clock cycles are given for jump not taken/jump taken.

3.Clock cycles are given for interrupt taken/interrupt not taken.

4.If TEST = 0

Shading indicates additions and enhancements to the 8086/8088 instruction set. See Appendix A, “80C186 Instruction Set Additions and Extensions,” for details.

D-5