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Line window table address bit : Line window table address bit
(W0LWTA18 to W0LWTA1, W1LWTA18 to W1LWTA1)
Specify the start address of the line window table on VRAM.

W0LWTA18 to W0LWTA16 1800D8H bits 2 to 0 For W0
W0LWTA15 to W0LWTA1 1800DAH bits 15 to 1 For W0
W1LWTA18 to W1LWTA16 1800DCH bits 2 to 0 For W1
W1LWTA15 to W1LWTA1 1800DEH bits 15 to 1 For W1

The actual start address is calculated using the following formula. If the VRAM capacity is 4M bits, the most significant bit of the address is ignored. 

 (Start address of line window table) = (Line window table address register value 18 bits) × 4H

Sprite window

The sprite window can be obtained by specifying the value of the most significant bit of the sprite frame buffer data if it is all palette-type data and the sprite type is 2-7. The area where the most significant bit is 1 is inside, and the other areas are outside. For the sprite type, please refer to “Sprite Type” in “9.1 Sprite Data”. The sprite window is shown in Figure 8.5.

Figure 8.5 Sprite window

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