Explain Execution Unit $($EU$)$ and Bus interlace Unit $($BIU$)$ of $8086$ with a neat dragram.

$(08$ Marks$)$

With an example distinguish between physical address, logical address and onset address. If $CS=2000h,DS=3000h,SS=4000h,ES=5000h,Bx=0030h,BP=0020h,$ find the phosical address for i$)$ MOV Al$|$BP$|$ ii$)$ MOV CX$,|$BX$|$ iii$)$ Add AX$,20[$BX$].$

$(06$ Marks$)$