$40:600B          -> Mode 7 status. $00 = disabled, $01 = fading out CGRAM, $02 = uploading 

interleaved character data, $03 = fading in CGRAM, $04 = active.
$40:600C          -> Mode 7 interleaved tilemap ExGFX file.
$40:600E          -> Mode 7 palette ExGFX file.
$40:6100          -> Used by Mode 7 engine to stream the interleaved tilemap. It contains current 

position.