CLXDAT 00E R D Collision data register (read and clear)
This address reads (and clears) the collision
detection register. The bit assignments are below.
NOTE: Playfield 1 is all odd-numbered enabled
bit planes. Playfield 2 is all even-numbered
enabled bit planes
BIT# COLLISIONS REGISTERED
--------------------------------------
15 not used
14 Sprite 4 (or 5) to sprite 6 (or 7)
13 Sprite 2 (or 3) to sprite 6 (or 7)
12 Sprite 2 (or 3) to sprite 4 (or 5)
11 Sprite 0 (or 1) to sprite 6 (or 7)
10 Sprite 0 (or 1) to sprite 4 (or 5)
09 Sprite 0 (or 1) to sprite 2 (or 3)
08 Playfield 2 to sprite 6 (or 7)
07 Playfield 2 to sprite 4 (or 5)
06 Playfield 2 to sprite 2 (or 3)
05 Playfield 2 to sprite 0 (or 1)
04 Playfield 1 to sprite 6 (or 7)
03 Playfield 1 to sprite 4 (or 5)
02 Playfield 1 to sprite 2 (or 3)
01 Playfield 1 to sprite 0 (or 1)
00 Playfield 1 to playfield 2
COLORxx 180 W D Color Table xx
There are 32 of these registers (xx=00-31) and they
are sometimes collectively called the "color
palette." They contain 12-bit codes representing
red, green, and blue colors for RGB systems.
One of these registers at a time is selected
(by the BPLxDAT serialized video code)
for presentation at the RGB video output pins.
The Table below shows the color register bit usage.
BIT# 15,14,13,12,11,10,09,08,07,06,05,04,03,02,01,00
----------------------------------------------------
RGB X X X X R3 R2 B1 R0 G3 G2 G1 G0 B3 B2 B1 B0
B=blue, G=green, R=red,
COP1LCH 080 W A Copper first location register
(high 3 bits)
COP1LCL 082 W A Copper first location register
(low 15 bits)
COP2LCH 084 W A Copper second location register
(high 3 bits)
COP2LCL 086 W A Copper second location register
(low 15 bits)
These registers contain the jump addresses described above.
- Appendix A 267 -
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