pp.asm

用debug实现矩阵转置

data segment
a db 11,12,13,14
  db 21,22,23,24
  db 31,32,33,34
  db 41,42,43,44
b db 16 dup(?)
g dw ?
d dw ?
data ends
stack segment
      dw 100 dup(?)
top label word
stack ends
code segment
     assume cs:code,ds:data,ss:stack
start:mov ax,data
      mov ds,ax
      mov ax,stack
      mov ss,ax
      mov cx,3
      push cx
      mov g,3
   lp:cmp bx,si
      jnz lop
      inc si
      jmp lp
  lp1:mov g,cx
      push cx
      jmp lp
  lop:mov ax,bx
      mov  d,4
      mul d
      add ax,si
      mov bp,ax
      mov dx,si
      sub dx,bx
      mul d
      sub dx,ax
      mov di,dx
      mov al,a[bx][si]
      mov dl,a[bp][di]
      mov a[bp][di],al
      mov a[bx][si],dl
      mov cx,g
      inc si
      loop lp
      pop cx
      inc bx
      mov si,bx
      loop lp1
code ends
     end start