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Because that's how Intel designed it.

They chose a 6 byte queue in the 8086 in order to optimize speed versus latency of the execution unit versus the bus interface unit. The decision for 6 bytes, as compared to 4 or 8 or some other number was a cost tradeoff and a recognition of the average mix of instruction execution cycle times in a typical processing thread.

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What is the size of the instruction queue in 8086?

In 8086 the instruction queue is 6 byte long. This is because even the longest 8086 instruction is 6 byte long. Thus it is possible to prefetch even the longest instruction in the instruction set.


Why Intel kept the name 8086?

in 8086, there is instruction queue of 6 byte. It is one of the reason behind giving name. 8086 was introducing pipeline architecture.


What is cache in 8086?

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What is pipeline. how it is achieved in 8086.discuss in brief?

In terms of computer language a pipeline is a set of data elements which are combined together and the yield or output of one element is taken as input for the other. In an 8086 microprocessor a bus used to execute data with help of 6-byte prefetch que.


What is the maximum length of an instruction in bytes for the 8086 based IBM PC?

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What is meaning of byte ptr in 8086?

byte ptr is an assembler directive that says the following operand is an address of a byte.


What is the size of RAM that 8086 can address?

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queue of 8086 microprocessor is 6 bits


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What are the roles of BHE in 8086 microprocessor?

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