# That what happens when i'm trying to convert the screen to white again ..

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## That what happens when i'm trying to convert the screen to white again ..

 someone know why? My code: Fiil2.asm
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## Re: That what happens when i'm trying to convert the screen to white again ..

 What value do you need to put to make all the pixels in a single word white? What is the actual value you are putting? On an unrelated note: you never need to write 2 @commands one after the other. The second one will always "win", so you can remove the first one. From your code: ``` @black @iter ```Why do you do that? What is your expectation for this code?
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## Re: That what happens when i'm trying to convert the screen to white again ..

 1. here the full code,as you can see I used the @black to tag the name of the section so I could jump there back easely after.... 2. I understood eventually what was my problome, in the white section when I was tryng to change the line I wroth 1 insted of 0. and 1 means block of white with one pixsel black.. (black)     @black     @iter     M=0     D=0     (startblack)     @startblack     @SCREEN // start Screen line[16384]     D = A // D = start screen line     @iter     D = D+M // D = screen start + current iteretion     M = M+1 // Add 1 to iter     A = D // load current iteretion     M=-1 // change to black or white     @24576 // load end screen line     D=D+1 // next iteretion(for chack only)     D=D-A // next iteretion - end line screen     @white     D;JEQ // if next iteretion > end line screen go to end     //else     @startblack     0;JMP (white)     @white     @iter     M=0     D=0     (startwhite)     @startwhite     @SCREEN // start Screen line[16384]     D = A // D = start screen line     @iter     D = D+M // D = screen start + current iteretion     M = M+1 // Add 1 to iter     A = D // load current iteretion     M=0 // change to black or white     @24576 // load end screen line     D=D+1 // next iteretion(for chack only)     D=D-A // next iteretion - end line screen     @black     D;JEQ // if next iteretion > end line screen go to end     //else     @startwhite     0;JMP
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## Re: That what happens when i'm trying to convert the screen to white again ..

 Administrator To jump to a section of code, you define the location with a label (black) and then you jump to it by loading the label into the A register with @black at the point you want to jump from. As ivant pointed out, doing @black @iter makes the @black meaningless because all the happens is that the A register gets loaded with the value of the label (black) and then the A register immediately gets loaded with the value of the address assigned to the variable 'iter'. This occurrence of @black plays absolutely no role in creating or jumping to the label (black).