write one or a few instructions that can accomplish the

specified task.

Send immediate number $1234H$ to register $Bx.$

Send immediate number $1234H$ to register DS$.$

Send the content in DI into memory cells with a starting

address of $2000H$ in data segment.

Send the word stored in memory cells with a starting

address of $2000H$ in data segment to register ES$.$

Add immediate number $0$ABH with the content in $AL.$

the result is sent to $AL.$

Add the contents in $Bx$ and $Cx$ up$,$ the result is sent to

BX$.$

Exchange the content of the high $8$ bits and low $8$ bits in

CX$.$

Multiply the content in AX with an $8-$bit signed number

Set the values of D$0,$ D$5$ and D$8$ to be $1$ in DX$,$ while

the other bits remain unchanged.

The lowest $4$ bits in $Bx$ are unchanged, while each of

the other bits is flipped and the result is stored back into

BX$.$

$(50$pts$)$ The following instructions are sequentially

executed, find the content in each marked register or FLAG

status bit after the corresponding instruction is executed.

MOV AX$,2000$H ; AH$=?$

MOV DS$,$ AX ;AL$-?,$ DS $=?$

MOV BX$,2030H$;$BH=?,BL=?$

MOV SI$,$ BX ;$SI=?$

PUSH BX

POP CX

$xCHG$ AX$,$ SI $,$ AX$=?,Sl=?$

ADD AX$,0F43H,$:$Ax=,CF=?$

$CWD,$;$Ax=?,Dx=?$

MOV BL$,$ OFFH

MUL BL

;$Ax=?$

IMUL BL

$Ax=?$