Intel 8086 MICROPROCESSOR ARCHITECTURE PDF

Intel 8086 MICROPROCESSOR ARCHITECTURE

8086 is designed to operate in two modes. Minimum and Maximum. • It can prefetches up to 6 instruction bytes from memory and queues them in order to.

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an 8086 family microprocessor is at the lower address. The 8086 has two parts Notes: Performs both division and modulus operations in one instruction.

UNIT- VI Lecture notes :- 8086 MICROPROCESSOR

architecture. •. This queue permits prefetch of up to six bytes of instruction code. When ever the queue of the

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8086 architecture employs parallel processing—i.e. both the units (BIU and EU) work at the same time. This is Unlike 8085 in which Sequential fetch and execute

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signal is set to 0. The timing diagram of this cycle is given in Fig. 8. 8086 Microprocessor Architecture and Operation: It is a 16 bit µp.

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The 8086 microprocessor has a much more powerful instruction set along with the architectural developments which imparts substantial programming flexibility

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Micro Computer System 8086/8088 Family Architecture Programming and Design - Liu A microprocessor is a computer processor which incorporates the.

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22Memory Address Generation
Physical Address (20 Bits)AdderSegment Register (16 bits)0 0 0 0Offset Value (16 bits) 23

24•The following examples shows the CS:IP scheme of
address formation:
Inserting a hexadecimal 0H (0000B)
with the CSR or shifting the CSR four binary digits left
3 4 B A 0 ( C S ) +

8 A B 4 ( I P )

3 D 6 5 4 (next address)34BA8AB4CSIP
34BA0
3D654
44B9FCode segment

8AB4 (offset)

25Segment and Address register
combination •CS:IP •SS:SPSS:BP •DS:BXDS:SI •DS:DI (for other than string operations) •ES:DI (for string operations)
26Summary of Registers & Pipeline of 8086 µP
AHAL BHBL CHCL DHDL SP BP SI DI
FLAGSD
E C O D E R ALUAX BX CX
DXEUEU

Timing
controlSP BP
Default AssignmentBIUBIU
IP
CSDSESSS

PIPELINE
(or)
QUEUEC
O D E O U TC O D E I NIPBX DI
SIDIFetch &
store code bytes in
PIPELINE
27
quotesdbs_dbs12.pdfusesText_18

[PDF] Intel 8086 MICROPROCESSOR ARCHITECTURE

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22Memory Address Generation

24•The following examples shows the CS:IP scheme of

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26Summary of Registers & Pipeline of 8086 µP

FLAGSD

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