- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373200 > KU386 (Intel Corp.) SX MICROPROCESSOR PDF資料下載
參數(shù)資料
| 型號： | KU386 |
| 廠商： | Intel Corp. |
| 英文描述： | SX MICROPROCESSOR |
| 中文描述： | SX微處理器 |
| 文件頁數(shù)： | 22/102頁 |
| 文件大?。?/td> | 1268K |
| 代理商： | KU386 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁
Intel386
TM
SX MICROPROCESSOR
240187–8
Figure 2.7. Debug Registers
3.0 REAL MODE ARCHITECTURE
When the processor is reset or powered up it is ini-
tialized in Real Mode. Real Mode has the same base
architecture as the 8086, but allows access to the
32-bit register set of the Intel386 SX Microproces-
sor. The addressing mechanism, memory size, and
interrupt handling are all identical to the Real Mode
on the 80286.
The default operand size in Real Mode is 16 bits, as
in the 8086. In order to use the 32-bit registers and
addressing modes, override prefixes must be used.
In addition, the segment size on the Intel386 SX Mi-
croprocessor in Real Mode is 64K bytes so 32-bit
addresses must have a value less then 0000FFFFH.
The primary purpose of Real Mode is to set up the
processor for Protected Mode operation.
3.1 Memory Addressing
In Real Mode the linear addresses are the same as
physical addresses (paging is not allowed). Physical
addresses are formed in Real Mode by adding the
contents of the appropriate segment register which
is shifted left by four bits to an effective address.
This addition results in a 20-bit physical address or a
1 megabyte address space. Since segment registers
are shifted left by 4 bits, Real Mode segments al-
ways start on 16-byte boundaries.
All segments in Real Mode are exactly 64K bytes
long, and may be read, written, or executed. The
Intel386 SX Microprocessor will generate an excep-
tion 13 if a data operand or instruction fetch occurs
past the end of a segment.
22
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| KU80C186EC25 | 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS |
| KU80C188EC16 | 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS |
| KU80C188EC25 | 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS |
| KU80L186EC16 | 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS |
| KU80L186EC20 | 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KU-3C-110D | 制造商:M.E.C. Relays 功能描述: |
| KU-3C-120A | 制造商:M.E.C. Relays 功能描述: 制造商:Master Electronic Controls (MEC) 功能描述: |
| KU-3C-12A | 制造商:M.E.C. Relays 功能描述: |
| KU-3C-12D | 制造商:M.E.C. Relays 功能描述: |
| KU-3C-240A | 制造商:M.E.C. Relays 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。