Figure 4-7 PART ONE: (Data Structure Layout)
Figure 4-7 PART TWO: (Data Structure Layout)
/|\ <------------- 16 Bits ----------->
| _________________________________----\ _ Each group of words
| | | | / defines one vertical
| | VSTART, HSTART | | / usage of a sprite.
| |_________________________________| | / Contains starting
| | |/ location & physical
I | VSTOP, control bits | | appearance of this
N |_________________________________| | sprite image.
C _________________________________ ___|___
R | | | |
E | Low word of data, line 1 | | |
A |_________________________________| | |
S | | | |\
I | High word of data, line 1 | | | \
N |_________________________________| | | \_ Pairs of words
G _____ | | containing color
_____ Data describing central | | information for
A _____ lines of this sprite. | | pixel lines.
D _________________________________ | |
D | | | |
R | low word of data, last line | | |
E |_________________________________| | |
S | | | |
S | High word of data, last line | | |
E |_________________________________|___|___|
S ____|
_________________________________
| | |\
| | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 | \
| |_________________________________| \_ Last word pair contains
| _________________________________ all zeros if this sprite
| | | processor is to be used
| | 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 | only once vertically in
\|/ |_________________________________| the display frame.
V
- Sprite Hardware 103 -