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Table 6.3 shows the
address values.
For example, 4H in the case of 2 words means that the least significant bit of the KAst integer part represents the address value of 4H, and can be calculated as follows.

(Coefficient table start address) = (KAst integer part 16 bits) x 4H

Table 6.3 Address value indicated by the least significant bit of coefficient parameter data by coefficient data size
Coefficient data
Size
Address value indicated by the least significant bit
Coefficient table address offset register value KAst, △ KAst, △ KAx integer value
2 words 40000H 4H
1 word 20000H 2H

● Most significant bit of coefficient data
The most significant bit of coefficient data is normally used as a transparent bit, and dots using coefficient data with this bit set to 1 are forced to be transparent dots. However, in RBG0, when rotation parameter mode 2 is selected, the most significant bit of the data read from the coefficient table for rotation parameter A is used for switching the rotation parameter. When the most significant bit is 0, the image specified by the rotation parameter A is displayed, and when it is 1, the image specified by the rotation parameter B is displayed. At this time, the most significant bit of the coefficient data read from the coefficient table for rotation parameter B is used as a transparent bit. The most significant bit of coefficient data for RBG1 is always used as a transparent bit.
∙ Processing by the most significant bit value of coefficient data is shown in Table 6.4.


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