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■ Line color screen enable register

Line color screen enable register specifies whether or not to insert a line color screen when each screen becomes the top image. This is a write-only 16-bit register located at 1800E8H. The value is cleared to 0 after power-on or reset, so be sure to set it.

Line color screen enable bit : Line color enable bit

(N0LCEN, N1LCEN, N2LCEN, N3LCEN, R0LCEN, SPLCEN) ∙ Specify whether to insert a line color screen when each screen is the top image.

N0LCEN 1800E8H Bit 0 For NBG0 (or RBG1 For use)
N1LCEN 1800E8H Bit 1 For NBG1 (or EXBG)
N2LCEN 1800E8H Bit 2 NBG2
N3LCEN 1800E8H Bit 3 NBG3
R0LCEN 1800E8H Bit 4 For RBG0
SPLCEN 1800E8H Bit 5 For Sprite

xxLCEN Process
0 Do not insert a line color screen when the corresponding screen is the top image
1 Insert a line color screen when the corresponding screen is the top image
[Note] N0, N1, N2, N3, R0, or SP is entered in the bit name xx.

The line color screen is inserted only in the second image where the screen specified to be inserted is the top image.
∙ Sprites can be specified only for the entire sprite. If you want to specify for each character, use the color calculation ratio value for each character.
∙ It cannot be used at the same time as the blur calculation function.

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