大二上汇编语言实验三.pdf

题目一：

org100h

moval,14H;压缩BCD码加法

movbl,28H

addal,bl

daa

moval,14h;压缩BCD码减法

movbl,28h

subal,bl

das

movax,0604h;非压缩BCD码加法

movbx,0208h

addax,bx

aaa

moval,04h;非压缩BCD码减法

movbl,08h

subal,bl

aas

movah,06h

movbl,02h

subah,bl

aas

moval,07h;非压缩BCD码乘法

movbl,08h

mulbl

aam

movax,0506h;非压缩BCD码除法

movbl,07h

aad

divbl

Ret

题目二：

org100h

MOV[1000H],12H

MOV[1001H],34H

MOV[1002H],56H

MOV[1003H],78H

MOVCL,4

MOVDL,4

MOVBL,0C0H

MOVSI,1000H

MOVDI,3000H

XCG:

MOVAL,[SI]

ANDAL,0FH

ADDAL,BL

MOV[DI],AL

INCDI

MOVAL,[SI]

SHRAL,CL

ADDAL,BL

MOV[DI],AL

INCDI

INCSI

DECDL

CMPDL,0

JNZXCG

END

ret