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Color RAM mode bits : Color RAM mode bits (CRMD1, CRMD0), bits 13, 12
Specify the color RAM mode.

 RGB each with 5 bits, 1024 colors setting  
 RGB each with 5 bits and 2048 colors  
 RGB each set to 1024 colors  
 Prohibit setting 
CRMD1
CRMD0
 Mode 
 Processing 
0
0
0
0
1
1
1
0
2
1
1

Storing color data in the color RAM must be done after setting this bit.
When mode 0 is set, writing the data to the first half of the color RAM address will simultaneously write the same data as the first half to the second half.
* When the CRKTE bit is set to 1, set the color RAM mode to mode 1. At that time, the second half of the color RAM (100800H to 100FFFH) is used for coefficient table data, so color data cannot be stored.

VRAM mode bit : VRAM mode bit (VRBMD, VRAMD), bits 9, 8
Please refer to “ 3.2 VRAM bank division ”.

Rotation data bank specification bit : RBG0 data bank select bit (RDBSA00 to RDBSB11), bits 7 to 0
Refer to “ 6.2 Rotating scroll screen display control ”.
When the CRKTE bit is set to 1, do not specify that the 4 banks of VRAM are used as coefficient table data RAM.


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