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 middle)
I'm new here, I have to write code for the task above in assembly,could someone help me and explain me how to solve this task? Please
mov ecx,0
mov cl,[QDM]
mov ebx,ecx
mov edi,Matrix
mSpiral:
push edi
mov al,[edi];Output [edi]
push ecx
mov edx,ecx
mov ecx,edx
dec ecx
cmp ecx,0
jle mSkD1
mD1:
add edi,ebx
mov al,[edi];Output [edi]
loop mD1
mSkD1:
mov ecx,edx
dec ecx
cmp ecx,0
jle mSkD2
mD2:
inc edi
mov al,[edi];Output [edi]
loop mD2
mSkD2:
mov ecx,edx
dec ecx
cmp ecx,0
jle mSkD3
mD3:
sub edi,ebx
mov al,[edi];Output [edi]
loop mD3
mSkD3:
mov ecx,edx
sub ecx,2
cmp ecx,0
jle mSkD4
mD4:
dec edi
mov al,[edi];Output [edi]
loop mD4
mSkD4:
pop ecx
pop edi
add edi,ecx
inc edi
sub ecx,2
cmp ecx,0
jle mEx
jmp mSpiral
mEx:
Matrix db 0,1,2,3,4,5,6,7,8,9,0Ah,0Bh,0Ch,0Dh,0Eh,0Fh
QDM db 4;Matrix dimension, each line mov al,[edi];Output [edi] means print. I did not implement it because I do not know what compiler and OS do you use.
I use assembler 8086. by which interrupt I should print the result ??
mov ah, 02h
int 21h ?? or something else?????
Thanks for your help
Yes, you can use it.
I tried one more time, but doesn't work.Your post is all right and helpful for me
If you can help me one more time it would be grateful. I couldn't print the result. tnx
I work on Windows 7. It does not allow to use interrupts, so I can print using Windows API only. Is it fine for you?
The AL(Assemly Linker) task wraps AL.exe, a tool that is distributed with the Windows Software Development Kit (SDK). This Assembly Linker tool is used to create an assembly with a manifest from one or more files that are either modules or resource files.
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