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Usually the processor execution speed is much faster than the memory access speed. Instruction queue is used to prefetch the 1 Mar 2018 The Instruction Queue: 1.The execution unit (EU) is supposed to decode or execute an instruction. 2.Decoding does not require the use of 1 Nov 2015 The Instruction Queue: When EU is busy in decoding and executing an instruction, the BIU fetches up to six instruction bytes for the next instructions. These bytes are called as the pre-fetched bytes and they are stored in a first in first out (FIFO) register set, which is called as a queue. 9 Sep 2018 A 3 byte teaching is instructions with 3 bytes , in general 1 opcode byte and 2 data according totes . Examples are LHLD 1234H , for the 8085The instruction queue in 8086 can store 6 bytes of instructions. The processor starts 49195465 8085 Microprocessor. 8085. Official Full-Text Publication:. 18 Sep 2018 The 8086/8088 instruction queue is a buffer that holds opcode bytes that have In 8085 program counter stores the address of the next instruction which is to be 27 Jun 2018 What is Instruction Queue in 8086 Microprocessor - Free download as PDF 8086 Disadvantages of 8085 16-bit processing is complicated. Which Stack is used in 8085? 7. What happens when HLT instruction is executed in processor? 8. What is meant by a bus? 9. What is Tri-state logic? 10. Give an 25 Dec 2011 Function of instruction queue in 8086 microprocessor. Ans.: The EU is decoding or executing an instruction which does not require use of the buses, the BUI fetches up to six STACK operation in 8085 microprocessor. The Instruction Queue: The execution unit (EU) is supposed to decode or execute an instruction. Decoding does not require the use of buses.