SMW Memory Map

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RAM Address	Length	Type	Description	Details
$7E0036	2 bytes	Misc.	Mode 7 rotation. Its values are calculated and stored into the respective Mode 7 parameter mirrors at $7E:002E through $7E:0035. Values #$0000 through #$01FF are all different values, after that it's the same pattern - that is, if you add this 16-bit address with #$0200, there is a 360 degree rotation. Furthermore, this address is used in the brown chained platform code as an index to the sine and cosine tables at $07:F7DB.
$7E0038	2 bytes	Misc.	Mode 7 scaling; that is, making Layer 1 shrink or grow. Its values are calculated and stored into the respective Mode 7 parameter mirrors at $7E:002E through $7E:0035. The first byte - $7E:0038 - is used for horizontal scaling, whereas the second byte - $7E:0039 - is used for vertical scaling. Default value is #$20. The closer to #$00, the more the layer grows, the further from #$00, the more the layer shrinks. Value #$10 makes the layer twice as large as value #$20, value #$40 makes the layer twice as small as value #$20, etc.

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