Figure 4-5 Sprite Color Definition - Commodore Amiga Hardware Reference Manual

Transparent
High-order word of sprite data line
Low-order word of sprite data line
Forms a binary
code, used as
the color choice
from a group of
color registers.
Figure 4-5: Sprite Color Definition
The Os and Is in the two data words that define each line of a sprite in the data struc-
ture form a binary number. This binary number points to one of the four color registers
assigned to that particular sprite DMA channel. The eight sprites use system color
registers 16 - 31. For purposes of color selection, the eight sprites are organized into
pairs and each pair uses four of the color registers as shown in figure 4-6. Note that the
color value of the first register in each group of four registers is ignored by sprites.
When the sprite bits select this register, the "transparent" value is used.
Sprite Hardware 97