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Extended color calculation enable bit : Extended color calculation enable bit (EXCCEN), bit 10
Specify whether to use the extended color calculation function. 

 EXCCEN 
 Processing 
 0 
 Do not use extended color calculation function 
 1 
 Use extended color calculation function

Color calculation ratio mode bit : Color calculation ratio mode bit (CCRTMD), bit 9
Specify the color calculation ratio mode. 

 CCRTMD 
 Mode 
 Process 
 0 
 0 
 Color calculation percentage is the top image Specify on the side 
 1 
 1 
 Color calculation percentage is the second image Specify on the side

Color calculation mode bit : Color calculation mode bit (CCMD), bit 8
Specify the color calculation mode. 

 CCMD 
 Mode 
 Process 
 0 
 0 
 According to the value of the color calculation percentage register Add 
 1 
 1 
 Add as it is

Color calculation enable bit : Color calculation enable bit
(N0CCEN, N1CCEN, N2CCEN, N3CCEN, R0CCEN, LCCCEN, SPCCEN)
Specify whether to perform color calculation (color calculation enable). 

N0CCEN
1800ECH
 bit 0 
 NBG0 (or RBG1) 
 N1CCEN 
 1800ECH 
 bit 1 
 NBG1 (or EXBG) 
 N2CCEN 
 1800ECH 
 bit 2 
 For NBG2 
 N3CCEN 
 1800ECH 
 bit 3 
 NBG3 
 R0CCEN 
 1800ECH 
 bit 4 
 for RBG0 
 LCCCEN 
 1800ECH 
 bit 5 
 For LNCL 
 SPCCEN 
 1800ECH 
 bit 6 
 For sprites 

 xxCCEN 
 Processing 
 0 
 No color operation 
 1 
 Perform color operations
[Note] N0, N1, N2, N3, R0, LC, or SP is entered in the bit name xx.

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