How come AX does not increment?

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FlitTear

Joined: 19 Feb 2009
Posts: 6

FlitTear 19 Feb 2009, 16:12

I'm new here in the forum so i guess i should say Hello first Very Happy

. Also i'm new to asm.

Okay. Here's the problem ax does not seem to increment here

Code:

macro drawVLine xCoord,yCoord, dist, pColor {
      local pangloop
      push ax
      push cx

      mov ax,yCoord
      mov cx,dist
      pangloop:
        plotPixel xCoord,ax,pColor
        inc ax
        dec cx
        cmp cx,0
        jne pangloop
      pop cx
      pop ax
}

but after i've change ax to bx it incremented. I could say that it incremented because i could see a horizontal in mode 13h. But for ax i only see a pixel.

Is this a bug or there just something wrong with my code?

19 Feb 2009, 16:12

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 19873
Location: In your JS exploiting you and your system

revolution 19 Feb 2009, 17:41

I would expect that the "plotPixel" macro is using AX for something and changing the value.

19 Feb 2009, 17:41

FlitTear

Joined: 19 Feb 2009
Posts: 6

FlitTear 19 Feb 2009, 18:18

:shock:Aw! Your right i used ax on the plotPixel. By the way thanks for the reply. I think i should avoid making macros that calls another macro.

19 Feb 2009, 18:18

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