王爽汇编语言1至7章学习笔记代码.docx

3-1assume cs:code,ds:data,ss:stackstack segmentdw 512 dup (0)stack endscode segmentdw 512 dup (0)data segmentdata endsstart: mov ax,data mov ds,ax mov ax,stack mov ss,ax mov ax,code mov bx,0 mov ax,ss:bx code endsend start7-1assume cs:code,ds:datadata segmentdb welcome to masm!db .data endscode segmentstart: mov ax,data mov ds,ax mov cx,8 mov si,0s: mov ax,0si mov 16si,ax add si,2 loop s mov ax,4c00h int 21hcode endsend start7-6assume cs:code,ds:datadata segmentdb 1. file db 2. edit db 3. search db 4. view db 5. options db 6. help data endscode segmentstart: mov ax,data mov ds,ax mov bx,0 mov cx,6s: mov al,bx+4 and al,11011111b mov bx+4,al add bx,16 loop s mov ax,4c00hint 21hcode endsend start7-8assume cs:code,ds:datadata segmentdb 1. file db 2. edit db 3. search db 4. view db 5. options db 6. help data endscode segmentstart: mov ax,data mov ds,ax mov bx,0 mov cx,6s0: mov dx,cx mov si,4 mov cx,7s1: mov al,bx+si and al,11011111b mov bx+si,al inc siloop s1 mov cx,dx add bx,16loop s0 mov ax,4c00hint 21hcode endsend start7-9assume cs:code,ds:datadata segmentdb 1. file db 2. edit db 3. search db 4. view db 5. options db 6. help dw 0data endscode segmentstart: mov ax,data mov ds,ax mov bx,0 mov cx,6s0: mov ds:40h,cx mov si,4 mov cx,7s1: mov al,bx+si and al,11011111b mov bx+si,al inc siloop s1 mov cx,ds:40h add bx,16loop s0 mov ax,4c00hint 21hcode endsend start8-1assume cs:code,ds:data, ss:stackdata segmentdb test.data endsstack segmentdw 0,0,0,0,0,0,0,0,0stack endscode segmentstart:mov ax,datamov ds,axmov bx,0