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Intel 80386 DJ Equipment User Manual

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80386

Table

8-1.

80386 Instruction Set Cloc k

Count

S

ummary(

c

ontlnued)

CLOCK

COUNT

NOTES

Real Real

INSTRUCTION

FORMAT

Address Protected Address Protected

Modear Virtual Modear Virtual

Virtual Address Virtual Address

8086 Mode

8086 Mode

Mode

Mode

REPEATED

STRING MANIPULATION

(Continued)

REPNE

CMPS

~

Compare String

ClkCount

(Find

Match)

I

till

00

1 0

1010011

w

Virtual

5+9n 5+9n

b h

8086

Mode

REP

INS

~

Input String

I

11110010

0110110w

I

t27+6n

13+6n

7 +

6n·'27

+

6n-·

b

h,m

REP

LODS

~

Load String

I

11110010

1010110w

5+6n

5+6n

b

h

REP

MOVS

~

Move String

I

11110010

1010010w

7+4n 7+4n

b

h

REP

OUTS

~

Output String

111110010

0110111

w

I

t26+5n

12+5n

6 +

5n-/26

+

5n··

b

h,m

REPE

SCAS

~

Scan String

(Find

Non-ALI AX/EAX)

I

1111001111010111Wl

5+8n 5+8n

b h

REPNE

SCAS

~

Scan String

(Find

ALI AX/EAX)

I

1111001011010111Wl

5+8n

5+8n

b

h

REP

STOS

~

Store String

11111001011010101Wl

5+5n

5+5n

b h

BIT MANIPULATION

BSF

~

Scan Bit Forward

I

00001111

I

1 0 1 1 1 1

00

ImOd

reg

r/ml

10+3n

10+3n

b h

BSR

~

Scan Bit Reverse

I

00001111

I

1 0 1 1 1 1

00

ImOd

reg

r/ml

10+3n 10+3n

b h

BT

~

Test Bit

Register/Memory.

Immediate

I

0000

1 1 1 1 I 1 0 1 1 1 0 1 0 Imod 1

00

r/mlirnmed

8-bit

data

3/6

3/6

.b

h

RegisterlMemory, Register

I

00001

111

11

01

0001

1

ImOd

reg

r/ml

3/12

3/12

b h

BTC

~

Test Bit and Complement

RegisterlMemory,

Immediate

I

00001111

110111010

Imod

111

r/mj;mmed 8-bit datal

6/8 6/8

b h

RegisterlMemory, Register

I

00001111

110111011

ImOd

reg

r/ml

6/13

6/13

b h

BTR

~

Test Bit and Reset

RegisterlMemory,

Immediate

I

0000

1 1 1 1 I 1 0 1 1 1 0 1 0 Imod 1 1 0

r/mlimmed

a-bit

datal

6/8

6/8

b h

Register/Memory,

Register

I

00001111

11

011 001

1 Imod

reg

r/ml

6/13

6/13

b h

BTS

~

Test Bit and Set

RegisterlMemory, Immediate

I

0000111

1 I 1

01

1 1

01

0 Imod 1

01

r/mlirnmed

a-bit

datal

6/8

6/8

b h

Register/Memory,

Register

I

00001111

I

10101011

ImOdreg

r/ml

6/13

6/13

b

h

BIT

STRING

MANIPULATION

IBTS

~

Insert Bit String

I

00001111

I

10100111

ImOdreg

r/ml

12/19

12/19

b h

XBTS

~

Extract Bit String

I

00001111

I

1 0 1

00

1 1 0

ImOd

reg

r/ml

6/13

6/13

b h

CONTROL TRANSFER

CALL

~

Can

Direct Within Segment

I

1 1 1 0 1 0 0 0 I

full

displacement

7+m

7+m

b r

Register IMemory

Indirect

Within

Segment

I

11111111

Imodolo

r/ml

7+ml

7+ml

b

h,

r

10+m

10+m

Direct

Intersegment

I

1

00

1 1 0 1 0

lunSigned

full

offset,

selector

17+m

34+m

b

j,k,r

Notes:

t Clock count shown applies

if

I/O

permission allows

I/O

to the port in virtual 6066

mode_

If

I/O

bit map denies permission

exception

13 fault occurs; refer

to

clock counts for INT 3 instruction_

• If CPL

s;

10PL

••

If CPL > 10PL

116

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