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Intel 80286 User Manual

Intel 80286
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80286
BASE
ARCHITECTURE
STACK
OPERATION
FOR
CODE
SEQUENCE: STACK
SEGMENT
PUSH
AX
POP
AX
POPBX 1062 0 0 0
0
1060
lOSE
2 2 2
2
105C
3
3 3 3
OF
STACK
105A 4
4 4 4
1058 5
5 5 5
I
1056
6 6
6 6
I
SS
SP
1054
7 7
7
I
SELECTOR
I
I
NOT
PRESENTL
V
OFFSET
1052
8 8 8
8
USED
I
1050
9 9
9
9
00001
I
EXISTING
STACK
BEFORE
PUSH
STACK
SEGMENT
1062 0 0
0
0
1060
1
lOSE 2 2 2
105C
3 3 3 3
105A 4
4 4 4
1058 5 5
5 5
PUSH
AX
1056 A
A A
A-4
A A A A
I
SS
SP
1054
I
SELECTOR
I
I
1052 8 8 8 8
OFFSET
1050
9 9
9 9
00001
I
STACK
SEGMENT
1062 0 0
0
0
1060
lOSE
2 2
2
POP
BX
105C
3
3 3
:3
15
5
5 5
105A
4 4 4
4
I
J
1058 5
5 5 5
SS
SP
1056
A
A A
A
j
I SELECTOR I
I
1054 7 7
7 7
OFFSET
I A
A
A
A
I
1052 8 8 8 8
1050
9 9 9
9
POP
AX
00001
I
G30108
Figure 2-8.
Stack Operation
2-12
pcjs.org

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Intel 80286 Specifications

General IconGeneral
Processor TypeMicroprocessor
Clock Speed6 MHz to 25 MHz
Transistor Count134, 000
Addressable Memory16 MB
Instruction Setx86
Architecturex86
Data Bus Width16-bit
Address Bus Width24-bit
Operating ModesReal mode, Protected mode
Process Technology1.5 µm
Voltage5V
Introduced1982
Package68-pin PGA

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