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■ Rotation parameter mode register

The rotation parameter mode register controls the rotation parameter table used for RBG0. This is a write-only 16-bit register located at 1800B0H. The value is cleared to 0 after power-on or reset, so be sure to set it.

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.

RPMD1 RPMD0 Mode Rotation parameters to use and usage
0 0 0 Rotation parameter A
0 1 1 Rotation parameter B
1 0 2 Read from coefficient table of rotation parameter A The image of A and B by the coefficient data
data
1 1 3
Switch B image

Note that the value of this bit is always valid, so be careful when rewriting.
When mode 2 is specified and coefficient data is read for each dot from the coefficient table for rotation parameter A, coefficient data cannot be read for each dot from the coefficient table for rotation parameter B. Therefore, even if a register is specified to read coefficient data for each dot from the coefficient table for rotation parameter B, it is ignored.
In mode 3, coefficient data can be read for each dot from both the coefficient table for rotation parameter A and the coefficient table for rotation parameter B.
⿟ Be sure to set mode 0 when displaying RBG1.

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