Instruction queue in 8086 microprocessor.

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 instruction bytes  for  the  following  instructions . the BUI stores  these  prefetched  bytes  in a first –in -irst –out  register  set  called a queue

When  the  EU is ready  for  it’s next  instruction , it  simply  reads  the  instruction   bytes  for  the  instruction  from  the  queue  in the  BUI     

This  is much  faster  than  sending  out  an  address to the system  memory  and  waiting  out  memory  to  send  back  the next  instruction  byte  or  bytes