Intel core 2 Duo T5850 Specifikace stáhnout pdf (Strana 146)

Intel

64 and IA-32 Architectures Software Developer’s Manual Documentation Changes 146

Documentation Changes

PREFETCHh—Prefetch Data Into Caches

Instruction Operand Encoding

...

PSADBW—Compute Sum of Absolute Differences

Opcode Instruction Op/

64-Bit

Mode

Compat/

Leg Mode

Description

0F 18 /1 PREFETCHT0 m8 AValid Valid Move data from m8 closer

to the processor using T0

hint.

0F 18 /2 PREFETCHT1 m8 AValid Valid Move data from m8 closer

to the processor using T1

hint.

0F 18 /3 PREFETCHT2 m8 AValid Valid Move data from m8 closer

to the processor using T2

hint.

0F 18 /0 PREFETCHNTA m8 AValid Valid Move data from m8 closer

to the processor using NTA

hint.

Op/En Operand 1 Operand 2 Operand 3 Operand 4

A ModRM:r/m (r) NA NA NA

Opcode Instruction Op/

64-Bit

Mode

Compat/

Leg Mode

Description

0F F6 /r PSADBW mm1,

mm2/m64

A Valid Valid Computes the absolute

differences of the packed

unsigned byte integers from

mm2 /m64 and mm1;

differences are then

summed to produce an

unsigned word integer

result.

66 0F F6 /r PSADBW xmm1,

xmm2/m128

A Valid Valid Computes the absolute

differences of the packed

unsigned byte integers from

xmm2 /m128 and xmm1;

the 8 low differences and 8

high differences are then

summed separately to

produce two unsigned word

integer results.

1 2 ... 141 142 143 144 145 146 147 148 149 150 151 ... 291 292

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