Intel 8253 - Figure 3-7 Instruction and Data Pointer Image in Memory 32-Bit Real Mode Format; Figure 3-5 Instruction and Data Pointer Image in Memory 32-Bit Protected Mode Format; Figure 3-6 Instruction and Data Pointer Image in Memory 16-Bit Protected Mode Format; Figure 2-1 Intel387 SX Math

Intel387
TM
SX MATH COPROCESSOR
32-BIT PROTECTED MODE FORMAT
31 23 15 7 0
RESERVED CONTROL WORD 0
RESERVED STATUS WORD 4
RESERVED TAG WORD 8
IP OFFSET C
00000 OPCODE
10..0
CS SELECTOR 10
DATA OPERAND OFFSET 14
RESERVED OPERAND SELECTOR 18
Figure 3-5. Instruction and Data Pointer Image in Memory, 32-Bit Protected-Mode Format
16-BIT PROTECTED MODE FORMAT
15 7 0
CONTROL WORD 0
STATUS WORD 2
TAG WORD 4
IP OFFSET 6
CS SELECTOR 8
OPERAND OFFSET A
OPERAND SELECTOR C
Figure 3-6. Instruction and Data Pointer Image in Memory, 16-Bit Protected-Mode Format
32-BIT REAL-ADDRESS MODE FORMAT
31 23 15 7 0
RESERVED CONTROL WORD 0
RESERVED STATUS WORD 4
RESERVED TAG WORD 8
RESERVED INSTRUCTION POINTER 15..0 C
0000 INSTRUCTION POINTER 31..16 0 OPCODE 10..0 10
RESERVED OPERAND POINTER 15..0 14
0000 OPERAND POINTER 31..16 0000 00000000 18
Figure 3-7. Instruction and Data Pointer Image in Memory, 32-Bit Real-Mode Format
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