Message #248313

[chickendude]

Also, why do you push bc/de at the start of the program? I've never heard of the _displayImage BCALL before either, i'd recommend checking out ion's putsprite routine (copying/pasting the code into your program somewhere):

ionPutSprite:
   Draw a sprite to the graph buffer (XOR).
   Input:   b=sprite height
      a=x coordinate
      l=y coordinate
      ix->sprite
   Output:   Sprite is XORed to the graph buffer.
      ix->next sprite
   Destroys: af bc de hl ix

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putSprite:     ld    e,l     ld    h,$00     ld    d,h     add    hl,de     add    hl,de     add    hl,hl     add    hl,hl               ;Find the Y displacement offset     ld    e,a     and    $07               ;Find the bit number     ld    c,a     srl    e     srl    e     srl    e     add    hl,de             ;Find the X displacement offset     ld    de,gbuf     add    hl,de putSpriteLoop1: sl1:    ld    d,(ix)             ;loads image byte into D     ld    e,$00     ld    a,c     or    a     jr    z,putSpriteSkip1 putSpriteLoop2:     srl    d                  ;rotate to give out smooth moving     rr    e     dec    a     jr    nz,putSpriteLoop2 putSpriteSkip1:     ld    a,(hl)     xor    d     ld    (hl),a     inc    hl     ld    a,(hl)     xor    e     ld    (hl),a              ;copy to buffer using XOR logic     ld    de,$0B     add    hl,de     inc    ix                   ;Set for next byte of image     djnz    putSpriteLoop1     ret

If your program is just drawing one line, like thepenguin said it's probably from bad parameters that you're passing to the BCALL and drawing only the first row of the sprite.