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Zoom point

The zoom point specifies the fixed point of the character when drawing by enlarging / reducing the rectangular sprite. Only rectangular sprites are considered.

Zoom point: zoom point (ZP), command table start address + 00H, bits 11 to 8
The zoom point specifies the fixed point of the character when drawing a rectangular sprite by enlarging or reducing it. The relationship between the zoom point value and the fixed point is as follows. When the zoom point (ZP) is 0H, there is no zoom point, and it is drawn by specifying the upper left coordinate and lower right coordinate.
¡Fix the zoom point to 0H except for rectangular sprites. 

 0  
 1  
 0  
 1  
 1  
 0  
 1  
 1  
 0  
 1  
 ZP 
 Code 
 Zoom point 
 bit 11 
 10 
9
8
0
0
0
 
 0H 
 Specify two coordinates 
0
1
0
 
 5H 
 Left edge of top edge 
0
1
1
 
 6H 
 top center 
0
1
1
 
 7H 
 top right edge 
1
0
0
 
 9H 
 center left 
1
0
1
 
 AH 
 center of the center 
1
0
1
 
 BH 
 center right 
1
1
0
 
 DH 
 Left edge of bottom 
1
1
1
 
 EH 
 bottom center 
1
1
1
 
 FH 
 Right edge of bottom 
 Other than the above 
 Setting prohibited (Do not set)

Figure 6.1 Zoom point

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