Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revision | |||
| ppu [2021/09/05 15:03] – [Colors and palettes] simer | ppu [2021/09/05 16:10] (current) – [Layer 1 and 2 registers] simer | ||
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| Line 78: | Line 78: | ||
| * Bit 2: Mirror the tiles horizontally | * Bit 2: Mirror the tiles horizontally | ||
| * Bit 3: Mirror the tiles vertically | * Bit 3: Mirror the tiles vertically | ||
| - | * Bits 4 and 5: Width of tiles | + | * Bits 4-5: Width of tiles |
| * 00 - 8 pixels | * 00 - 8 pixels | ||
| * 01 - 16 pixels | * 01 - 16 pixels | ||
| * 10 - 32 pixels | * 10 - 32 pixels | ||
| * 11 - 64 pixels | * 11 - 64 pixels | ||
| - | * Bits 6 and 7: Height of tiles | + | * Bits 6-7: Height of tiles |
| * Same format as width register | * Same format as width register | ||
| - | * Bits 8 to 11: Palette bank to use | + | * Bits 8-11: Palette bank to use |
| - | * Bits 12 and 13: Layer depth (wether it is under or over sprites and the other layer) | + | * Bits 12-13: Layer depth (wether it is under or over sprites and the other layer) |
| * 00 - bottom layer | * 00 - bottom layer | ||
| * 01 - second-bottom layer | * 01 - second-bottom layer | ||
| * 10 - second-top layer | * 10 - second-top layer | ||
| * 11 - top layer | * 11 - top layer | ||
| - | * Bits 14 and 15: unused (in later PPU generations it sets the layer size) | + | * Bits 14-15: unused (in later PPU generations it sets the layer size) |
| The control register can do the following: | The control register can do the following: | ||
| Line 106: | Line 106: | ||
| When the attribute map mode is used, each word stores attributes for one tile in each byte in the following format: | When the attribute map mode is used, each word stores attributes for one tile in each byte in the following format: | ||
| - | * Bits 0 to 3: Palette bank to use | + | * Bits 0-3: Palette bank to use |
| * Bit 4: Mirror the tiles horizontally | * Bit 4: Mirror the tiles horizontally | ||
| * Bit 5: Mirror the tiles vertically | * Bit 5: Mirror the tiles vertically | ||
