Sprite port-mirror Attribute 0 Register
From SpecNext official Wiki
| Number | $35 |
|---|---|
| Readable | No |
| Writable | Yes |
| Short Description | Nextreg port-mirror to write directly into "byte 1" of Sprite Attribute Upload ($xx57 / 87). |
Eight low bits of X position. MSB of X-pos is in "byte 3".