參數(shù)資料
型號: intel386 SX
廠商: Intel Corp.
英文描述: 32-Bit CPU With a 16-Bit External Data Bus And a 24-bit External Address Bus(帶16位內(nèi)部數(shù)據(jù)總線和24位內(nèi)部地址總線32位微處理器)
中文描述: 32位16位外部數(shù)據(jù)總線和24位外部地址總線CPU(帶16位內(nèi)部數(shù)據(jù)總線和24位內(nèi)部地址總線32位微處理器)
文件頁數(shù): 100/102頁
文件大?。?/td> 1166K
代理商: INTEL386 SX
Intel386
TM
SX MICROPROCESSOR
Encoding of 32-bit Address Mode (‘‘mod r/m’’ byte and ‘‘s-i-b’’ byte present):
mod base
Effective Address
DS:
[
EAX
a
(scaled index)
]
DS:
[
ECX
a
(scaled index)
]
DS:
[
EDX
a
(scaled index)
]
DS:
[
EBX
a
(scaled index)
]
SS:
[
ESP
a
(scaled index)
]
DS:
[
d32
a
(scaled index)
]
DS:
[
ESI
a
(scaled index)
]
DS:
[
EDI
a
(scaled index)
]
00 000
00 001
00 010
00 011
00 100
00 101
00 110
00 111
01 000
01 001
01 010
01 011
01 100
01 101
01 110
01 111
DS:
[
EAX
a
(scaled index)
a
d8
]
DS:
[
ECX
a
(scaled index)
a
d8
]
DS:
[
EDX
a
(scaled index)
a
d8
]
DS:
[
EBX
a
(scaled index)
a
d8
]
SS:
[
ESP
a
(scaled index)
a
d8
]
SS:
[
EBP
a
(scaled index)
a
d8
]
DS:
[
ESI
a
(scaled index)
a
d8
]
DS:
[
EDI
a
(scaled index)
a
d8
]
10 000
10 001
10 010
10 011
10 100
10 101
10 110
10 111
DS:
[
EAX
a
(scaled index)
a
d32
]
DS:
[
ECX
a
(scaled index)
a
d32
]
DS:
[
EDX
a
(scaled index)
a
d32
]
DS:
[
EBX
a
(scaled index)
a
d32
]
SS:
[
ESP
a
(scaled index)
a
d32
]
SS:
[
EBP
a
(scaled index)
a
d32
]
DS:
[
ESI
a
(scaled index)
a
d32
]
DS:
[
EDI
a
(scaled index)
a
d32
]
NOTE:
Mod field in ‘‘mod r/m’’ byte; ss, index, base fields in
‘‘s-i-b’’ byte.
ss
Scale Factor
00
01
10
11
x1
x2
x4
x8
index
Index Register
000
001
010
011
100
101
110
111
EAX
ECX
EDX
EBX
no index reg
**
EBP
ESI
EDI
**
IMPORTANT NOTE:
When index field is 100, indicating ‘‘no index register,’’ then
ss field MUST equal 00. If index is 100 and ss does not
equal 00, the effective address is undefined.
100
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