COLOR SELECTION IN HOLD-AND-MODIFY MODE
In hold-and-modify mode, the color register contents are changed as shown in Table 3-
18. This mode is in effect only if bit 10 of BPLCON0 = 1.
Table 3-18: Color Selection in Hold-and-modify Mode
Bitplane 6 Bitplane 5 Result
0 0 Normal operation (use color register itself)
0 1 Hold green and red B = Bit-plane 4-1 contents
0 Hold green and blue R = Bit-plane 4-1 contents
Hold blue and red G = Bit-plane 4-1 contents
COLOR SELECTION IN HIGH-RESOLUTION MODE
Table 3-19 shows playfield color selection in high-resolution mode. If the bit-combinations
from the playfields are as shown, the color is taken from the color register number
indicated.
- 90 Playfield Hardware -