參數(shù)資料
型號： 21928
英文描述： Low-Frequency, Spread-Spectrum EconOscillator
中文描述： 的AMD - K6 - 2E處理器數(shù)據(jù)手冊3DNow?。考夹g(shù)手冊
文件頁數(shù)： 59/72頁
文件大?。?/td> 845K
代理商： 21928
Chapter 2
3DNow! Instruction Set
49
21928G/0—March 2000
3DNow! Technology Manual
PFSUB
mnemonic
opcode/imm8
description
PFSUB mmreg1, mmreg2/mem64
0Fh 0Fh / 9Ah
Packed floating-point subtraction
Privilege:
Registers Affected:
Flags Affected:
Exceptions Generated:
none
MMX
none
PFSUB is a vector instruction that performs subtraction of the source operand from
the destination operand. Both operands are single-precision, floating-point operands
with 24-bit significands. Table 19 on page 50 shows the numerical range of the PFSUB
instruction.
The PFSUB instruction performs the following operations:
mmreg1[31:0] = mmreg1[31:0] – mmreg2/mem64[31:0]
mmreg1[63:32] = mmreg1[63:32] – mmreg2/mem64[63:32]
Exception
Invalid opcode (6)
Device not available (7)
Real
X
X
Virtual
8086
X
X
Protected Description
X
X
The emulate 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(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
219-2-8235-1 制造商:Airpax 功能描述:CIRCUIT PROTECTOR HYD MAGNETIC 制造商:Airpax 功能描述:CIRCUIT BREAKER MAG-HYDR LEVER 制造商:Sensata Technologies 功能描述:219-2-8235-1 /Pole # 2 /Prod Family: 0209
219-2-8696-1 制造商:Airpax 功能描述:CIRCUIT BREAKER MAG-HYDR LEVER 制造商:Sensata Technologies 功能描述:219-2-8696-1 /Pole # 2 /Prod Family: 0209
21-9290 制造商:Tenma 功能描述:Soldering Iron Pencil 25W 制造商:TENMA 功能描述:PENCIL SOLDERING IRON 25 WATT
219-2-9344-1 制造商:Airpax 功能描述:CIRCUIT PROTECTOR HYD MAGNETIC 制造商:Sensata Technologies 功能描述:219-2-9344-1 /Pole # 2 /Prod Family: 0209
21-9295 制造商:Tenma 功能描述:Soldering Iron Pencil 45W 制造商:TENMA 功能描述:PENCIL SOLDERING IRON 40 WATT
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