matrix in assembly 8086 mxn dimension

Thread Starter

zemzi

Joined Dec 14, 2011
8
I made a code in assembly 8086. I load matrix (array) in memory with dimension 3x3. but this code works just for this dimension of matrix 3x3. Could someone give me an idea how could i make it to work with dimension m x n? the array is loaded in memory and at the end just print the result, another array. thanks

Rich (BB code):
; multi-segment executable file template.

data segment
matrix db 1, 2, 3, 4, 5, 6, 7, 8, 9 ; load matrix in memory

ends

stack segment
dw 128 dup(0)
ends

code segment
start:
; set segment registers:
mov ax, data
mov ds, ax
mov es, ax



mov bx, matrix ; move matrix to offset bx
mov ch, 3
mov cl, 0


COLUMNAHEAD: 

mov dl, [bx] ; get the first element of matrix in dl
add dl, 30h ; add to show number
mov ah, 02h
int 21h ; print first number
inc cl 

cmp cl, ch ; compare if the counter is at the end of column


jge ROWAHEAD ; if greater go to row
add bx, 3 ; if not inc offset for 3 
jmp COLUMNAHEAD





ROWAHEAD:
inc cl ; 1 element of roe
inc bx ; inc offset for one place
mov dl, [bx] ; get the number in dl
add dl, 30h ; convert to number
mov ah, 02h
int 21h ; print the number

cmp cl, 5 
je COLUMNAHEAD
jne ROWAHEAD 


COLUMNBACK:
inc cl 
sub bx, 3
mov dl, [bx]
add dl, 30h
mov ah, 02h
int 21h 
cmp cl, 7
jne COLUMNBACK 
je ROWBACK

ROWBACK:
dec bx 
mov dl, [bx] 
add dl, 30h
mov ah, 02h
int 21h 
JMP MIDDLE


MIDDLE:
add bx, 3
mov dl, [bx] 
add dl, 30h
mov ah, 02h
int 21h 

JMP END

END:
this is the code i wrote. it works for the matrix
1, 2, 3,
4, 5, 6,
7, 8, 9 and print 1, 4, 7, 8, 9, 6, 3, 2, 5

Matrix given in memory to print the spiral in opposite direction from clockwise (left column down the right lower range, right up column, a series of upper left, etc. until you get to the environment). This works just for dimension 3x3. this should works for mxn dimension. but i don't know how, any suggestion???
 
Last edited by a moderator:

Thread Starter

zemzi

Joined Dec 14, 2011
8
I use 8086, but I don't understand what is up? If you know how to solve my problem please help me?
 

holnis

Joined Nov 25, 2011
50
But,how exactly, do you want to get the values for the dimensions mxn of your matrix ?
Is it via the command line or Do you input these values using a prompt box? Or maybe you read the dimensions from an other file.. ?


I use 8086, but I don't understand what is up?
up = the Micro-Processor.
 
Top