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AMD Geode LX [email protected] User Manual

Page 638

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638

AMD Geode™ LX Processors Data Book

Instruction Set

33234H

JNBE/JA Jump on Not Below or Equal/Above

-

-

-

-

-

-

-

-

r

8-bit Displacement

77 +

1

1

Full Displacement

0F 87 +++

1

1

JNE/JNZ Jump on Not Equal/Not Zero

-

-

-

-

-

-

-

-

r

8-bit Displacement

75 +

1

1

Full Displacement

0F 85 +++

1

1

JNL/JGE Jump on Not Less/Greater or Equal

-

-

-

-

-

-

-

-

r

8-bit Displacement

7D +

1

1

Full Displacement

0F 8D +++

1

1

JNLE/JG Jump on Not Less or Equal/Greater

-

-

-

-

-

-

-

-

r

8-bit Displacement

7F +

1

1

Full Displacement

0F 8F +++

1

1

JNO Jump on Not Overflow

-

-

-

-

-

-

-

-

r

8-bit Displacement

71 +

1

1

Full Displacement

0F 81 +++

1

1

JNP/JPO Jump on Not Parity/Parity Odd

-

-

-

-

-

-

-

-

r

8-bit Displacement

7B +

1

1

Full Displacement

0F 8B +++

1

1

JNS Jump on Not Sign

-

-

-

-

-

-

-

-

r

8-bit Displacement

79 +

1

1

Full Displacement

0F 89 +++

1

1

JO Jump on Overflow

-

-

-

-

-

-

-

-

r

8-bit Displacement

70 +

1

1

Full Displacement

0F 80 +++

1

1

JP/JPE Jump on Parity/Parity Even

-

-

-

-

-

-

-

-

r

8-bit Displacement

7A +

1

1

Full Displacement

0F 8A +++

1

1

JS Jump on Sign

-

-

-

-

-

-

-

-

r

8-bit Displacement

78 +

1

1

Full Displacement

0F 88 +++

1

1

LAHF Load AH with Flags

9F

2

2

-

-

-

-

-

-

-

-

-

LAR Load Access Rights

0F 02 [mod reg r/m]

-

-

-

-

-

x

-

-

-

a

g,h,j,p

From Register/Memory

9

LDS Load Pointer to DS

C5 [mod reg r/m]

4

9/15

-

-

-

-

-

-

-

-

-

b

h,i,j

LEA Load Effective Address

-

-

-

-

-

-

-

-

-

No Index Register

8D [mod reg r/m]

1

1

With Index Register

1

1

LEAVE

2

2

LES Load Pointer to ES

C4 [mod reg r/m]

4

9/15

-

-

-

-

-

-

-

-

-

b

h,i,j

LFENCE

1

1

LFS Load Pointer to FS

0F B4 [mod reg r/m]

4

9/15

-

-

-

-

-

-

-

-

-

b

h,i,j

LGDT Load GDT Register

0F 01 [mod 010 r/m]

8-9

8-9

-

-

-

-

-

-

-

-

-

b,c

h,l

LGS Load Pointer to GS

0F B5 [mod reg r/m]

4

9/15

-

-

-

-

-

-

-

-

-

b

h,i,j

LIDT Load IDT Register

0F 01 [mod 011 r/m]

8-9

8-9

-

-

-

-

-

-

-

-

-

b,c

h,l

LLDT Load LDT Register

0F 00 [mod 010 r/m]

-

-

-

-

-

-

-

-

-

a

g,h,j,l

From Register/Memory

8

LMSW Load Machine Status Word

-

-

-

-

-

-

-

-

-

From Register/Memory

0F 01 [mod 110 r/m]

8

8

b,c

h,l

LODS Load String

A [110 w]

2

2

-

-

-

-

-

-

-

-

-

b

h

LOOP Offset Loop/No Loop

E2 +

2

2

-

-

-

-

-

-

-

-

-

r

Table 8-26. Processor Core Instruction Set (Continued)

Instruction

Opcode

Clock Count

(Reg/Cache Hit)

Flags

Notes

Real

Mode

Prot’d

Mode

O D I

T

S Z

A P C

F

F

F

F

F

F

F

F

F

Real

Mode

Prot’d

Mode

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