ANTIC
DMACTL $D400 Write

Playfield Width Bits [1:0]
Description
Size
0 0 = $00
Disable playfield
-
0 1 = $01
Narrow playfield
128 color clocks/256 high-res pixels
1 0 = $02
Normal playfield
160 color clocks/320 high-res pixels
1 1 = $03
Wide playfield
192 color clocks/384 high-res pixels

Question: What are the specifications for color clocks and high-res pixel width on the ANTIC across narrow, normal and wide playfields?
Answer: A ANTIC displays narrow playfield (128 color clocks/256 hi-res pixels wide), normal width playfield (160 color clocks/320 hi-res pixels wide), and wide playfield (192 color clocks/384 hi-res pixels wide).