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參數(shù)資料
| 型號(hào)： | 30046-23 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Low Power Integrated x86-Compatible 32-Bit Geode GXLV Processor(低功耗集成兼容X86的32位 Geode GXLV技術(shù)處理器) |
| 中文描述： | 32-BIT, 200 MHz, MICROPROCESSOR, CPGA320 |
| 封裝： | SPGA-320 |
| 文件頁(yè)數(shù)： | 42/247頁(yè) |
| 文件大?。?/td> | 4379K |
| 代理商： | 30046-23 |
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42
Revision 1.2
Processor Programming (
Continued
)
G
3.2
The GXLV processor instruction set can be divided into
nine types of operations:
INSTRUCTION SET OVERVIEW
Arithmetic
Bit Manipulation
Shift/Rotate
String Manipulation
Control Transfer
Data Transfer
Floating Point
High-Level Language Support
Operating System Support
The GXLV processor instructions operate on as few as
zero operands and as many as three operands. A NOP
(no operation) instruction is an example of a zero-operand
instruction. Two-operand instructions allow the specifica-
tion of an explicit source and destination pair as part of
the instruction. These two-operand instructions can be
divided into ten groups according to operand types:
Register to Register
Register to Memory
Memory to Register
Memory to Memory
Register to I/O
I/O to Register
Memory to I/O
I/O to Memory
Immediate Data to Register
Immediate Data to Memory
An operand can be held in the instruction itself (as in the
case of an immediate operand), in one of the processor’s
registers or I/O ports, or in memory. An immediate oper-
and is fetched as part of the opcode for the instruction.
Operand lengths of 8, 16, 32 or 48 bits are supported as
well as 64 or 80 bits associated with floating-point instruc-
tions. Operand lengths of 8 or 32 bits are generally used
when executing code written for 386- or 486-class (32-bit
code) processors. Operand lengths of 8 or 16 bits are
generally used when executing existing 8086 or 80286
code (16-bit code). The default length of an operand can
be overridden by placing one or more instruction prefixes
in front of the opcode. For example, the use of prefixes
allows a 32-bit operand to be used with 16-bit code or a
16-bit operand to be used with 32-bit code.
Section 7.3 “Processor Core Instruction Set” on page 216
contains the clock count table that lists each instruction in
the CPU instruction set. Included in the table are the
associated opcodes, execution clock counts, and effects
on the EFLAGS register.
3.2.1
The LOCK prefix may be placed before certain instruc-
tions that read, modify, then write back to memory. The
PCI will not be granted access in the middle of locked
instructions. The LOCK prefix can be used with the follow-
ing instructions only when the result is a write operation to
memory.
Lock Prefix
Bit Test Instructions (BTS, BTR, BTC)
Exchange Instructions (XADD, XCHG, CMPXCHG)
One-Operand Arithmetic and Logical Instructions
(DEC, INC, NEG, NOT)
Two-Operand Arithmetic and Logical Instructions
(ADC, ADD, AND, OR, SBB, SUB, XOR).
An invalid opcode exception is generated if the LOCK pre-
fix is used with any other instruction or with one of the
instructions above when no write operation to memory
occurs (for example, when the destination is a register).
SMHR
SMAR
DIR0
SMM Header Address
SMM Address 0
Device Identification 0
000000h
000000h
4xh
See Table 3-11 on page 54 for bit definitions
See Table 3-11 on page 54 for bit definitions.
Device ID and reads back initial CPU clock-speed set-
ting. See Table 3-11 on page 54 for bit definitions.
Stepping and Revision ID (RO). See Table 3-11 on
page 54 for bit definitions.
See Table 3-13 on page 56 for bit definitions.
DIR1
Device Identification 1
xxh
DR7
Note:
x = Undefined value
Debug Register 7
00000400h
Table 3-1. Initialized Core Register Controls (Continued)
Register
Register Name
Initialized Contents
Comments
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 300471U | Radial, -55dotc, long life wsitching-power |
| 300CNQ | SCHOTTKY RECTIFIER |
| 300CNQ035 | SCHOTTKY RECTIFIER |
| 300CNQ040 | SCHOTTKY RECTIFIER |
| 300CNQ045 | SCHOTTKY RECTIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 30046-46L | 制造商:LENOX 功能描述:HOLE SAW BI-METAL 73MM |
| 300-466A | 制造商:LG Corporation 功能描述:CABINET ASSYCMT-9325 |
| 300-466B | 制造商:LG Corporation 功能描述:CABINET ASSYCMT-9324 |
| 300-466K | 制造商:LG Corporation 功能描述:CABINET ASSYCMT-9322 |
| 300-466R | 制造商:LG Corporation 功能描述:FRONT CABINET |
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