Sprite port-mirror Attribute 3 Register
|Short Description||Nextreg port-mirror to write directly into "byte 4" of Sprite Attribute Upload ($xx57 / 87).|
Byte 4 is bitmapped:
|6||Enable fifth sprite attribute byte|
|5-0||Pattern index ("Name")|
When the bit 6 is "0", the sprite renderer will ignore value written in fifth attribute byte, for example by Sprite port-mirror Attribute 4 Register ($39), and it will use zero for all the features of fifth attribute byte (it is safe to initialize only four bytes if you are planning to use 4-byte type of sprites).
If you want the value in fifth attribute byte to apply during rendering, bit 6 here must be set to "1".