王爽《汇编语言》课程设计二.docx

王爽《汇编语言》课程设计二.docx

《王爽《汇编语言》课程设计二.docx》由会员分享，可在线阅读，更多相关《王爽《汇编语言》课程设计二.docx（12页珍藏版）》请在冰豆网上搜索。

王爽《汇编语言》课程设计二

先运行代码1，再运行代码2，要利用虚拟机

代码1

assumecs:

code

codesegment

NewStart1:

jmpshortNewStart2

db'1）resetpc',0

db'2）startsystem',0

db'3）clock',0

db'4）setclock',0

s5dw8dup（0）

s6db"aaaa/aa/aaaa:

aa:

aa",0

NewStart2:

movbx,200h

movds,bx

movbx,0b800h

moves,bx

movsi,2

movbp,160*10+30*2

movcx,4

show:

pushcx

movdi,0

movcx,16

show1:

moval,ds:

[si]

moves:

[bp+di],al

adddi,2

incsi

loopshow1

popcx

addbp,158

loopshow

movbx,66

movwordptrds:

[bx],0

movwordptrds:

[bx+2],0ffffh

ccc:

movah,0

int16h

cmpal,'1'

jereset

cmpal,'2'

jestartsystem

cmpal,'3'

jeclock

cmpal,'4'

jesetclock

jmpccc

reset:

movbx,200h

movds,bx

movbx,66

jmpdwordptrds:

[bx]

startsystem:

movbx,0

moves,bx

movbx,7c00h

movdl,80h

movdh,0

movch,0

movcl,1

moval,1

movah,2

int13h

movbx,0

pushbx

movbx,7c00h

pushbx

retf

setclock:

jmpshortsetclock1

bdb'aaaaaaaaaaaaaa'

setclock1:

pushax

pushsi

pushds

pushdx

movax,200h

movds,ax

movsi,offsetb

movdx,0

callgetstr

callstr

popdx

popds

popsi

popax

callcls

jmpnearptrNewStart1

clock:

callcls

movbx,200h

movds,bx

movbx,0

moves,bx

movbx,66

pushes:

[9*4]

popds:

[bx+10]

pushes:

[9*4+2]

popds:

[bx+12]

cli

movwordptres:

[9*4],offsetint9

moves:

[9*4+2],ds

sti

s4:

movsi,offsets6

moval,32h

calls

mov[si],ah

mov[si+1],al

addsi,2

moval,9

movcx,3

s1:

movbl,al

calls

mov[si],ah

mov[si+1],al

addsi,3

moval,bl

decal

loops1

movsi,offsets6

addsi,11

moval,4

movcx,3

s2:

movbl,al

calls

mov[si],ah

mov[si+1],al

addsi,3

moval,bl

subal,2

loops2

movbx,0b800h

moves,bx

movsi,offsets6

movdi,160*6+40*2

movcx,19

s3:

movbl,[si]

moves:

[di],bl

incsi

adddi,2

loops3

jmpshorts4

s:

pushcx

out70h,al

inal,71h

movah,al

movcl,4

shrah,cl

andal,00001111b

addah,30h

addal,30h

popcx

ret

cls:

pushes

pushbx

pushcx

movbx,0b800h

moves,bx

movbx,0

movcx,2000

s10:

movbyteptres:

[bx],''

addbx,2

loops10

popcx

popbx

popes

ret

int9:

pushax

pushbx

pushes

pushcx

movbx,200h

movds,bx

movax,0b800h

moves,ax

movbx,66

inal,60h

pushf

calldwordptrds:

[bx+10]

cmpal,3bh

jneok1

movbx,160*6+40*2+1

movcx,19

s7:

incbyteptres:

[bx]

addbx,2

loops7

ok2:

popcx

popes

popbx

popax

iret

ok1:

cmpal,01

jneok2

movax,0

moves,ax

movbx,66

cli

pushds:

[bx+10]

popes:

[9*4]

pushds:

[bx+12]

popes:

[9*4+2]

sti

popcx

popes

popbx

popax

movbp,0b800h

moves,bp

movbx,160*6+40*2

movcx,19

s8:

movbyteptres:

[bx],''

addbx,2

loops8

movax,200h

pushax

movax,0

pushax

retf

charstack:

jmpshortcharstart

tabledwcharpush,charpop,charshow

charstart:

pushbx

pushdi

pushes

cmpah,2

jasret

movbl,ah

movbh,0

addbx,bx

jmpwordptrtable[bx]

charpush:

movbx,dx

mov[si][bx],al

incdx

jmpsret

charpop:

cmpdx,0

jesret

decdx

movbx,dx

moval,[si][bx]

jmpsret

charshow:

movbx,0b800h

moves,bx

movdi,160*6+40*2

movbx,0

charshows:

cmpbx,dx

jnenoempty

movbyteptres:

[di],''

jmpsret

noempty:

moval,[si][bx]

moves:

[di],al

movbyteptres:

[di+2],''

incbx

adddi,2

jmpcharshows

sret:

popes

popdi

popbx

ret

getstr:

pushax

getstrs:

movah,0

int16h

cmpal,20h

jbnochar

movah,0

callcharstack

movah,2

callcharstack

jmpgetstrs

nochar:

cmpah,0eh

jebackspace

cmpah,1ch

jeenter

jmpgetstrs

backspace:

movah,1

callcharstack

movah,2

callcharstack

jmpgetstrs

enter:

moval,0

movah,0

callcharstack

movah,2

callcharstack

popax

ret

wrtc:

pushcx

out70h,al

movah,b[bx]

subah,30h

movcl,4

shlah,cl

incbx

moval,b[bx]

subal,30h

oral,ah

out71h,al

incbx

popcx

ret

str:

pushax

pushbx

movbx,0

moval,32h

callwrtc

moval,9

callwrtc

moval,8

callwrtc

moval,7

callwrtc

moval,4

callwrtc

moval,2

callwrtc

moval,0

callwrtc

popbx

popax

ret

start:

pushcs

popes

movbx,offsetNewStart1

moval,16

movch,0

movcl,2

movdl,0

movdh,0

movah,3

int13h

movax,4c00h

int21h

codeends

endstart

代码2

assumecs:

code

codesegment

NewStart1:

jmpshortNewStart2

dw0,0

NewStart2:

movbx,200h

moves,bx

movbx,0

moval,16

movch,0

movcl,2

movdl,0

movdh,0

movah,2

int13h

movax,0

moves,ax

movwordptres:

[7c04h],200h

jmpdwordptres:

[7c02h]

start:

pushcs

popes

movbx,offsetNewStart1

moval,1

movch,0

movcl,1

movdl,0

movdh,0

movah,3

int13h

movax,4c00h

int21h

codeends

endstart