(1) Necessary for each line
(2) Required for each dot

When storing coefficient table data for each line, store the coefficient table in VRAM. The VRAM address for reading the stored coefficient table data is specified in KAst, DKAst, DKAx and coefficient table address offset register in the rotation parameter table.
When storing coefficient table data for each dot, store the coefficient table in either VRAM or color RAM. When storing in VRAM, specify at least one bank as a coefficient table by the rotation data bank specification bit of the RAM control register. At that time, the VRAM address for reading the stored coefficient table data is specified in KAst, DKAst, DKAx and coefficient table address offset register in the rotation parameter table. When storing the coefficient table in the color RAM, store it in the second half of the color RAM (100800H to 100FFFH). At this time, the color RAM address for reading the stored coefficient table data is specified in KAst, DKAst, and DKAx in the rotation parameter table. However, only the lower 10 bits of the integer part of the calculated coefficient table address are valid for reading the coefficient table data.
∙ The following four coefficient modes can be selected as the parameter for using the data read from the coefficient table.

 Mode 0: Use as scaling factor kx, ky
Mode 1: Use as scaling factor kx
Mode 2: Use as scaling factor ky
Mode 3: Use as viewpoint coordinate Xp after rotation conversion 

In mode 0, kx and ky read from the rotation parameter table are invalid and the data read from the coefficient table is used as kx and ky.
When mode 1 is specified, ky read from the rotation parameter table is