cass.cityboundforest.com
A dungeon delver roguelike using Pathfinder 2nd edition rules
1SECTION "Text", ROM0
2
3textFontTileData: INCBIN "src/generated/backgrounds/text-font.2bpp"
4textFontTileDataEnd:
5
6LoadTextFontIntoVRAM::
7 ; Copy the tile data
8 ld de, textFontTileData
9 ld hl, $9000
10 ld bc, textFontTileDataEnd - textFontTileData
11 jp CopyDEIntoMemoryAtHL
12 ret
13
14DrawTextTilesLoop::
15 ; Check for the end of string character 255
16 ld a, [hl]
17 cp 255
18 ret z
19
20 ; Write the current character (in hl) to the address
21 ; on the tilemap (in de)
22 ld a, [hl]
23 ld [de], a
24
25 inc hl
26 inc de
27
28 ; move to the next character and next background tile
29 jp DrawTextTilesLoop