We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS

Sprite Line Buffer

From SnesLab
Revision as of 00:04, 19 August 2024 by Xetheria (talk | contribs) (page -> overview)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Note: The information in this overview omits the fetch line limit (which is actually 272 pixels wide or 34 8 pixel wide cells).

The Sprite Line Buffer is where sprites are pre-rendered to during hblank before being composited together with the backgrounds. It is 256 pixels wide, and a total of 2304 bits. Internally, it is composed of two 128x9-bit half-line buffers (1152 bits each): one storing even-numbered pixels and the other odd. For each pixel, each half-line buffer stores:

  • four bits of color data
  • three bits for palette number
  • two priority bits

Each of these half-line buffers are clocked at 10.7 MHz (X1/2 divider) during writes and have their own address lines.

See Also

References