Re: A85: DJNZ

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Re: A85: DJNZ


djnz decrements the B register and jumps back up to the label if b is not
0

ld b, 10
pixelLoop:
 CALL_(drawPix)
 djnz pixelLoop

voila!

Erik Huizing
ehuizing@acs.ucalgary.ca
http://www.ucalgary.ca/~ehuizing
On Mon, 28 Jul 1997, Will Stokes wrote:


I believe all you would have to do is for the loop also decrease say d
every time you draw a new point. just load d with a certain number (say 10
pixels?) befor eyou start and thendo it like this:


	ld d, 10   ; 10 pixels
top:
	inc b
	call_(drawpixel)  ; draws pixel at b,c
	dec d
	djnz top

am I correct? i havn't used htis function much myself and not for a while
anyway =)


On Mon, 28 Jul 1997, John Koch wrote:

> Question, how do I use DJNZ.  I'm trying to make a loop that plots
> pixels in rows and things.  Can someone please explain this to me.
> 
> John
> 


				Biya! =)

                         .       .     .    
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          .                     Will Stokes                .
      .             wstokes@vertex.ucls.uchicago.edu           .
    .                   wstokes@geocities.com                       .
      .  http://www.geocities.com/SiliconValley/Pines/7360/will.htm    .
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       .   http://www.geocities.com/SiliconValley/Pines/7360/      .
        .    .           (The TI-85 Calc. Center)               .
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