Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
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ff3:ff3us:doc:asm:ram:field_ram [2019/02/12 08:30] 127.0.0.1 external edit |
ff3:ff3us:doc:asm:ram:field_ram [2021/04/24 07:33] snaphat [$0000-$00FF: Field Direct Page] |
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| ++ $8C Source of BG chunk change data | ++ $8C Source of BG chunk change data | ||
| + $8F XY Position of BG chunk to change | + $8F XY Position of BG chunk to change | ||
| - | + $91 Pointer to BG1 Map Data in VRAM (for vertical scrolling) | + | + $91 Pointer to BG1 Map Data in VRAM (for vertical scrolling |
| + $93 Pointer to BG1 Map Data in VRAM (for horizontal scrolling, first column) | + $93 Pointer to BG1 Map Data in VRAM (for horizontal scrolling, first column) | ||
| + $95 Pointer to BG1 Map Data in VRAM (for horizontal scrolling, second column) | + $95 Pointer to BG1 Map Data in VRAM (for horizontal scrolling, second column) | ||
| - | + $97 Pointer to BG2 Map Data in VRAM (for vertical scrolling) | + | + $97 Pointer to BG2 Map Data in VRAM (for vertical scrolling |
| + $99 Pointer to BG2 Map Data in VRAM (for horizontal scrolling, first column) | + $99 Pointer to BG2 Map Data in VRAM (for horizontal scrolling, first column) | ||
| + $9B Pointer to BG2 Map Data in VRAM (for horizontal scrolling, second column) | + $9B Pointer to BG2 Map Data in VRAM (for horizontal scrolling, second column) | ||
| - | + $9D Pointer to BG3 Map Data in VRAM (for vertical scrolling) | + | + $9D Pointer to BG3 Map Data in VRAM (for vertical scrolling |
| + $9F Pointer to BG3 Map Data in VRAM (for horizontal scrolling, first column) | + $9F Pointer to BG3 Map Data in VRAM (for horizontal scrolling, first column) | ||
| + $A1 Pointer to BG3 Map Data in VRAM (for horizontal scrolling, second column) | + $A1 Pointer to BG3 Map Data in VRAM (for horizontal scrolling, second column) | ||
| Line 1272: | Line 1272: | ||
| $D000-$D03F BG3 Tile Formation (palette only) | $D000-$D03F BG3 Tile Formation (palette only) | ||
| $D040-$D83F Used as a buffer for decompressing map data etc. | $D040-$D83F Used as a buffer for decompressing map data etc. | ||
| - | $D840-$D8BF Partial BG1 Map for Horizontal Scrolling (2 x 32 tiles, 2 bytes per 8x8 tile) | + | $D840-$D8BF Partial BG1 Map for Horizontal Scrolling (2 x 32 tiles, 2 bytes per 8x8 tile) (first column, second column) |
| - | $D8C0-$D93F Partial BG2 Map for Horizontal Scrolling (2 x 32 tiles, 2 bytes per 8x8 tile) | + | $D8C0-$D93F Partial BG2 Map for Horizontal Scrolling (2 x 32 tiles, 2 bytes per 8x8 tile) (first column, second column) |
| - | $D940-$D9BF Partial BG3 Map for Horizontal Scrolling (2 x 32 tiles, 2 bytes per 8x8 tile) | + | $D940-$D9BF Partial BG3 Map for Horizontal |
| - | $D9C0-$E1BF BG1 Map (32 x 32 tiles, 2 bytes per 8x8 tile) | + | $D9C0-$DA3F Partial BG1 Map for Vertical Scrolling (2 x 32 tiles, 2 bytes per 8x8 tile) |
| - | $E1C0-$E9BF BG2 Map (32 x 32 tiles, 2 bytes per 8x8 tile) | + | $DA40-$E1BF Partial BG2 Map for Vertical Scrolling (2 x 32 tiles, 2 bytes per 8x8 tile) |
| - | $E9C0-$F1BF BG3 Map (32 x 32 tiles, 2 bytes per 8x8 tile) | + | $E1C0-$E23F Partial BG3 Map for Vertical |
| + | $D9C0-$E1BF BG1 Map for Full Updates | ||
| + | $E1C0-$E9BF BG2 Map for Full Updates | ||
| + | $E9C0-$F1BF BG3 Map for Full Updates | ||
| $F1C0-$F1CF Saved Actor Index | $F1C0-$F1CF Saved Actor Index | ||
| $F1D0-$F1DF Saved Level | $F1D0-$F1DF Saved Level | ||
| Line 1297: | Line 1300: | ||
| $4420 Window at top of screen | $4420 Window at top of screen | ||
| $4640 Window at bottom of screen | $4640 Window at bottom of screen | ||
| - | $4800-$4FFF BG1 Map Data | + | $4800-$4FFF BG1 Map Data - 2 buffers that are swapped between during on-screen element updates (e.g. opening doors and chests.) |
| - | $4800 | + | $4800 - Start Buffer (4bbp, 32x32 map size, 8x8 tile size) |
| - | $4C00 | + | $4C00 - Alternate Buffer (4bbp, 32x32 map size, 8x8 tile size) |
| - | $5000-$57FF BG2 Map Data | + | $5000-$57FF BG2 Map Data - 2 buffers that are swapped between during on-screen element updates (e.g. in Narshe cave). |
| - | $5800-$5FFF BG3 Map Data | + | $5000 - Start Buffer (4bbp, 32x32 map size, 8x8 tile size) |
| + | $5400 - Alternate Buffer (4bbp, 32x32 map size, 8x8 tile size) | ||
| + | $5800-$5FFF BG3 Map Data - 2 buffers that are swapped between during on-screen element updates. | ||
| + | $5800 - Start Buffer (4bbp, 32x32 map size, 8x8 tile size) | ||
| + | $5c00 - Alternate Buffer (4bbp, 32x32 map size, 8x8 tile size) | ||
| $6000-$7FFF Sprite Graphics | $6000-$7FFF Sprite Graphics | ||
| $6000 Object Graphics | $6000 Object Graphics | ||