Tilemap Offset X MSB Register

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Number $2F
Readable Yes
Writable Yes
Short Description Sets the pixel offset (two high bits) used for drawing Tilemap graphics on the screen.
Bits 7-2 Reserved, must be 0
Bits 1-0 Tilemap X-offset, top two bits of it (0 after a reset)

Meaningful Range is 0-319 in 40 char mode, 0-639 in 80 char mode.

The low eight bits of the offset value are stored in Tilemap Offset X LSB Register ($30).