Discussion and Report

Write an instruction that will initialize the ES register with the immediate value $1010H.$

Write an instruction that saves the contents of the ES register in memory at address DS:$1000$H$.$

Why does the instruction MOV BH$,$ AX result in an error when it is assembled?

What are the results of executing the following instructions?

XCHG AX$,[$XYZ$]$

XCHG $[$BX$+$DI$],$ AX

Assume $Ax=12CCH,Bx=1100H,DI=0400H,DS=3000H,xYZ=0600H,DS$:$600=66,$ and DS:$601=77.$

Assuming that $(Ax)=0010H,(Bx)=0100H,$ and $(DS)=1400H,$ what happens if the XLAT instruction is executed?

Write a single instruction that loads CX from address $0400H$ and DS from address $0402H.$

Why does the instruction MOV $[Bx],23$ result in an error when it is assembled?

Correct the errors in the following program, and then execute it:

MOV ES$,1234$

MOV $[$SI$+12],$ AB

XCHG ES$,[$SI$+12]$

MOV $[$BX$],$ AX

XCHG $[$BX$],[$SI$+12]$

Assume $ES=1300H,SI=100H,Ax=9080H,Bx=3344H,ES$:$112=40H,ES$:$113=50H,$ ES:$3344=01$H$,$ and ES:$3345=02$H$.$

Write a program in assembly language to copy $64$ bits that stores in memory locations starting at $200H$ and extra segment equal to $2000H$ to memory locations starting at $300H.$

Write a program in assembly language to flip $6$ bytes that stores in memory locations starting at $200H$ and data segment equal to $2000H$ and then store them in memory locations starting at $300H$ and data segment equal to $3000H.$