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● Back screen table address

Back screen color mode bit : BACK color mode bit (BKCLMD), bit 15
Specify the color mode of the back screen. 

 BKCLMD 
 Back screen color 
 0 
 Make a single color 
 1 
 Specify line by line

Back screen table address bit : BACK color table address bit (BKTA18 ~ BKTA0)
Specify the top address of the back screen table on VRAM. 

 BKTA18 ~ BKTA16 
 1800ACH 
 bits 2-0 
 
 BKTA15 to BKTA0 
 1800AEH 
 bit 15 ~ 0

● Rotation parameter mode

Rotation parameter mode bits : Rotation parameters mode bits (RPMD1, RPMD0), bits 1, 0
Specify whether to use A or B rotation parameters when displaying RBG0. 

 Rotation parameter A  
 Rotation parameter B  
 Switch image A and B by coefficient data 
 read from coefficient table of rotation parameter A  
 Rotate parameter window to 
 switch between image A and image B 

RPMD1
RPMD0
 
 Mode 
 Rotation parameters used and usage 
0
0
0
0
1
1
1
0
2
1
1
3

● Rotation parameter read control

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