Instruction set summary, Continued) – Intel 80L186EA User Manual
Page 46
80C186EA 80C188EA 80L186EA 80L188EA
INSTRUCTION SET SUMMARY
(Continued)
Function
Format
80C186EA
80C188EA
Comments
Clock
Clock
Cycles
Cycles
ARITHMETIC
(Continued)
IMUL
e
Integer multiply (signed)
1 1 1 1 0 1 1 w
mod 1 0 1 r m
Register-Byte
25–28
25–28
Register-Word
34–37
34–37
Memory-Byte
31–34
32–34
Memory-Word
40–43
40–43
IMUL
e
Integer Immediate multiply
0 1 1 0 1 0 s 1
mod reg r m
data
data if s
e
0
22–25
22-25
(signed)
29–32
29–32
DIV
e
Divide (unsigned)
1 1 1 1 0 1 1 w
mod 1 1 0 r m
Register-Byte
29
29
Register-Word
38
38
Memory-Byte
35
35
Memory-Word
44
44
IDIV
e
Integer divide (signed)
1 1 1 1 0 1 1 w
mod 1 1 1 r m
Register-Byte
44–52
44–52
Register-Word
53–61
53–61
Memory-Byte
50–58
50–58
Memory-Word
59–67
59–67
AAM
e
ASCII adjust for multiply
1 1 0 1 0 1 0 0
0 0 0 0 1 0 1 0
19
19
AAD
e
ASCII adjust for divide
1 1 0 1 0 1 0 1
0 0 0 0 1 0 1 0
15
15
CBW
e
Convert byte to word
1 0 0 1 1 0 0 0
2
2
CWD
e
Convert word to double word
1 0 0 1 1 0 0 1
4
4
LOGIC
Shift Rotate Instructions
Register Memory by 1
1 1 0 1 0 0 0 w
mod TTT r m
2 15
2 15
Register Memory by CL
1 1 0 1 0 0 1 w
mod TTT r m
5
a
n 17
a
n 5
a
n 17
a
n
Register Memory by Count
1 1 0 0 0 0 0 w
mod TTT r m
count
5
a
n 17
a
n 5
a
n 17
a
n
TTT Instruction
0 0 0
ROL
0 0 1
ROR
0 1 0
RCL
0 1 1
RCR
1 0 0
SHL SAL
1 0 1
SHR
1 1 1
SAR
AND
e
And
Reg memory and register to either
0 0 1 0 0 0 d w
mod reg r m
3 10
3 10
Immediate to register memory
1 0 0 0 0 0 0 w
mod 1 0 0 r m
data
data if w
e
1
4 16
4 16
Immediate to accumulator
0 0 1 0 0 1 0 w
data
data if w
e
1
3 4
3 4
8 16-bit
TEST
e
And function to flags no result
Register memory and register
1 0 0 0 0 1 0 w
mod reg r m
3 10
3 10
Immediate data and register memory
1 1 1 1 0 1 1 w
mod 0 0 0 r m
data
data if w
e
1
4 10
4 10
Immediate data and accumulator
1 0 1 0 1 0 0 w
data
data if w
e
1
3 4
3 4
8 16-bit
OR
e
Or
Reg memory and register to either
0 0 0 0 1 0 d w
mod reg r m
3 10
3 10
Immediate to register memory
1 0 0 0 0 0 0 w
mod 0 0 1 r m
data
data if w
e
1
4 16
4 16
Immediate to accumulator
0 0 0 0 1 1 0 w
data
data if w
e
1
3 4
3 4
8 16-bit
Shaded areas indicate instructions not available in 8086 8088 microsystems
NOTE
Clock cycles shown for byte transfers For word operations add 4 clock cycles for all memory transfers
46
46