000 = only a background color
001
= 1 bit-plane, PLANE 1
010
= 2 bit-planes, PLANES 1 and 2
011
= 3 bit-planes, PLANES
1-
3
100
= 4 bit-planes, PLANES 1 - 4
101
= 5 bit-planes, PLANES 1 - 5
110
= 6 bit-planes, PLANES 1 - 6
111
not used
Bit
15
- HIRES (high-resolution enable)
1
= high-resolution mode
o = low-resolution mode
BPLCONl
-
Bit-plane
Control
Bits 3-0 - PF1H(3:-0)
Playfield 1 delay
Bits 7-4 - PF2H(3-0)
Playfield 2 delay
Bits 15-8 not used
BPLCON2
-
Bit-plane
Control
Bit 6 - PF2PRI
1
= Play
field
2 has priority
o = Play
field
1 has priority
Bits 0-5 Play
field
sprite priority
Bits 7-15 not used
84 Play
field
Hardware