gbdk-2020 | GameBoy Development Kit |
| download: https://git.y1.nz/archives/gbdk.tar.gz | |
| README | Files | Log | Refs | LICENSE |
gbdk-lib/libc/targets/mos6502/nes/set_bk_ts.s
1 .include "global.s"
2
3 ; NOTE: This overlay arrangement MUST match that of set_bkg/win[_based]_submap
4 .area GBDKOVR (PAG, OVR)
5 _set_bkg_tiles_PARM_3::
6 _set_bkg_based_tiles_PARM_3::
7 _set_win_tiles_PARM_3::
8 _set_win_based_tiles_PARM_3:: .ds 1
9 ;
10 _set_bkg_tiles_PARM_4::
11 _set_bkg_based_tiles_PARM_4::
12 _set_win_tiles_PARM_4::
13 _set_win_based_tiles_PARM_4:: .ds 1
14 ;
15 _set_bkg_tiles_PARM_5::
16 _set_bkg_based_tiles_PARM_5::
17 _set_win_tiles_PARM_5::
18 _set_win_based_tiles_PARM_5:: .ds 2
19 ;
20 _set_bkg_based_tiles_PARM_6::
21 _set_win_based_tiles_PARM_6:: .ds 1
22 ;
23 .padding:: .ds 1
24 .xpos: .ds 1
25 .ypos: .ds 1
26 .num_rows: .ds 1
27 .src_tiles: .ds 2
28 .remainder: .ds 1
29 .ppuhi: .ds 1
30
31 .define .width "_set_bkg_submap_PARM_3"
32 .define .height "_set_bkg_submap_PARM_4"
33 .define .tiles "_set_bkg_submap_PARM_5"
34 .define .map_width "_set_bkg_submap_PARM_6"
35 .define .tile_offset "_set_bkg_based_submap_PARM_7"
36
37 .area _HOME
38
39 .ifdef NES_WINDOW_LAYER
40 _set_win_tiles::
41 ldy #0
42 sty *_set_win_based_tiles_PARM_6
43 _set_win_based_tiles::
44 tay
45 lda *__current_vram_cfg_write
46 pha
47 ora #PPUHI_WIN
48 sta *__current_vram_cfg_write
49 tya
50 jsr _set_bkg_tiles
51 pla
52 sta *__current_vram_cfg_write
53 rts
54 .endif
55
56 _set_bkg_tiles::
57 ldy #0
58 sty *_set_bkg_based_tiles_PARM_6
59 _set_bkg_based_tiles::
60 sta *.xpos
61 stx *.ypos
62 lda *_set_bkg_based_tiles_PARM_6
63 sta *.tile_offset
64 lda *.width
65 sta *.map_width
66 lda *.tiles
67 sta *.src_tiles
68 lda *.tiles+1
69 sta *.src_tiles+1
70 jmp .set_bkg_common
This webpage is intended to be an accessible preview of this repository. To get a fuller picture, clone it and use the git CLI.