■ 7.6 Transform sprite drawing command

• Setting the end bit to 0B and the command selection bit to 0010B results in a modified sprite drawing command.

• Specify the jump format. When the jump format is assign or call, divide the address of the command table to be processed next by 8H and set it to CMDLINK.

• Set the reading direction of the character pattern. You can draw by flipping vertically or horizontally by specifying the reading direction. If the inversion is specified twice by specifying the read direction and specifying the vertex (A), vertex (B), vertex (C), and vertex (D), the inversion is canceled and the original is restored.

• Set high speed shrink. Specify precision priority or speed priority.

• Set pre-clipping. Consider the clipping area and the drawing position of the part, and specify whether it is enabled or disabled.

• Specifies the user clipping enabled bit and the clipping mode. Specifies whether user clipping is outside or inside in clipping mode.

• Set mesh enabled, end code disabled, and transparent pixel disabled. Sets the MSB on for shading or windowing in VDP2.

• Sets the color mode that defines the character pattern. Specify the color bank when the color mode is color bank mode. In lookup table mode, define the color lookup table address by dividing it by 8H.

• Specifies the color operation. Color calculation is valid in RGB mode. If you do not want to perform color calculation, specify replacement. When performing Gouraud shading processing, specify the address table of Gouraud shading by dividing it by 8H. Gouraud shading processing is effective in RGB mode.

• Divide the address of the character pattern table by 8H and define it in CMDSRCA. Define the horizontal and vertical of the character size defined in the character pattern table in CMDSIZE. The horizontal size defines the value divided by 8.

• The upper left coordinate of the area to be drawn is the vertex (A) (CMDXA, CMDYA), the upper right coordinate is the vertex (B) (CMDXB, CMDYB), the lower right coordinate is the vertex (C) (CMDXC, CMDYC), and the lower left coordinate. Defined on the vertex (D) (CMDXD, CMDYD). Since the positional relationship of the four vertices is arbitrary, you can specify enlargement / reduction, expansion / contraction, rotation, and twist by specifying vertices (A), vertices (B), vertices (C), and vertices (D). .. You can also flip it upside down or flip it horizontally.

• NOTE: If you set the two vertices to the same coordinates, the sprite will be drawn as a triangle. If you set the four vertices to the same coordinates, the sprite will be drawn in 1 pixel.