On 13 Jan 2003, at 7:41, [EMAIL PROTECTED] wrote:

> OK, I have tried to create a null pointer.  However, can anyone please 
> explain why the following code shows 2 pointers on screen:

As I don'thave easyptr, I can't really comment.

However, the sprite defintion seems  wrong to me

1 - the form should be
data 1,0,0,0
2 - , line 7920 should be:
7920 POKE_L BlankPtrAdd+20,0:REMark Pointer to next definition
(there is none)

3 - Im' not sure whether the size should be 0

try ti set it to 0,2,0,2

Here is a null sprite definition (in asm) I *Know* works:

sp4_vide                                ; this is just an empty sprite
        DC.W    $0100,$0000
        DC.W    2,2,0,0
        DC.L    sc4_vide-*
        DC.L    sc4_vide-*
        DC.L    0
sc4_vide
        DC.L    $0000,$0000       ; just a transparent sprite


I hope this helps

Wolfgang
-----------------
www.wlenerz.com

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