參數(shù)資料
型號： 20726
英文描述： 3DNow!? Technology Manual AMD-K6 Processor Multimedia Technology
中文描述： 3DNow！？技術(shù)手冊的AMD - K6處理器多媒體技術(shù)
文件頁數(shù)： 27/120頁
文件大?。?/td> 1284K
代理商： 20726
MMX Instruction Set
21
20726D/0—January 2000
AMD-K6 MMX Enhanced Processor Multimedia Technology
Preliminary Information
PACKSSDW
mnemonic
opcode
description
PACKSSDW mmreg1, mmreg2/mem64 0F 6Bh
Pack with saturation signed 32-bit operands into signed
16-bit results
Privilege:
Registers Affected:
Flags Affected:
Exceptions Generated:
none
MMX
none
The PACKSSDW instruction performs a pack and saturate operation on two signed
32-bit values in the first operand and two signed 32-bit values in the second operand.
The four signed 16-bit results are placed in the specified MMX register.
The pack operation is a data conversion. The PACKSSDW instruction converts or
packs the four signed 32-bit values into four signed 16-bit values, applying saturating
arithmetic. If the signed 32-
bit value is less than –32768 (8000h), it saturates to –32768
(8000h). If the signed 32-bit value is greater than 32767 (7FFFh), it saturates to 32767
(7FFFh). All values between –32768 and 32767 are represented with their signed
16-bit value.
The first operand must be an MMX register. In addition to providing the first operand,
this MMX register is the location where the result of the pack and saturate operation
is stored. The second operand can be an MMX register or a 64-bit memory location.
Exception
Invalid opcode (6)
Device not available (7)
Real
X
X
Virtual
8086
X
X
Protected Description
X
X
The emulate MMX instruction bit (EM) of the control register (CR0) is set to 1.
Save the floating-point or MMX state if the task switch bit (TS) of the control
register (CR0) is set to 1.
During instruction execution, the stack segment limit was exceeded.
During instruction execution, the effective address of one of the segment
registers used for the operand points to an illegal memory location.
One of the instruction data operands falls outside the address range 00000h
to 0FFFFh.
A page fault resulted from the execution of the instruction.
An exception is pending due to the floating-point execution unit.
Stack exception (12)
General protection (13)
X
X
Segment overrun (13)
X
X
Page fault (14)
Floating-point exception
pending (16)
Alignment check (17)
X
X
X
X
X
X
X
An unaligned memory reference resulted from the instruction execution,
and the alignment mask bit (AM) of the control register (CR0) is set to 1.
(In Protected Mode, CPL = 3.)
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相關代理商/技術(shù)參數(shù)
參數(shù)描述
20727 制造商:Schneider Electric 功能描述:CIRCUIT BREAKER DECLIC 20A 制造商:Schneider Electric 功能描述:CIRCUIT BREAKER 1 POLE + NEUTRAL 20 A
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20729 制造商:Schneider Electric 功能描述:CIRCUIT BREAKER DECLIC 32A 制造商:Schneider Electric 功能描述:CIRCUIT BREAKER 1 POLE + NEUTRAL 32 A
207292-1 功能描述:標準環(huán)形連接器 CPC RECP 17-16 RoHS:否 制造商:Hirose Connector 系列:EM-W 產(chǎn)品類型:Accessories 位置/觸點數(shù)量:1 觸點類型: 觸點電鍍: 安裝風格:Cable 外殼材質(zhì): 端接類型:Clamp 電壓額定值:
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