diff options
| author | Rangi <35663410+Rangi42@users.noreply.github.com> | 2020-07-04 16:19:15 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-07-04 16:19:15 -0400 |
| commit | 2718c36065e7eb201a149938bcdd51987c4e56b6 (patch) | |
| tree | 4a1c0294193a497e15ec8e6be59390eb1f84b5d3 /home/header.asm | |
| parent | c85050497c1bd062e9cd40bf5b32fa3beca366cc (diff) | |
| parent | 36f8cd1477b8ebe0537e99abd3ba53471a2e16c4 (diff) | |
Merge pull request #257 from Rangi42/master
More reorganization
Diffstat (limited to 'home/header.asm')
| -rw-r--r-- | home/header.asm | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/home/header.asm b/home/header.asm new file mode 100644 index 00000000..047f97f4 --- /dev/null +++ b/home/header.asm @@ -0,0 +1,57 @@ +; rst vectors (unused) + +SECTION "rst0", ROM0[$0000] + rst $38 + +SECTION "rst8", ROM0[$0008] + rst $38 + +SECTION "rst10", ROM0[$0010] + rst $38 + +SECTION "rst18", ROM0[$0018] + rst $38 + +SECTION "rst20", ROM0[$0020] + rst $38 + +SECTION "rst28", ROM0[$0028] + rst $38 + +SECTION "rst30", ROM0[$0030] + rst $38 + +SECTION "rst38", ROM0[$0038] + rst $38 + + +; Game Boy hardware interrupts + +SECTION "vblank", ROM0[$0040] + jp VBlank + +SECTION "lcd", ROM0[$0048] + rst $38 + +SECTION "timer", ROM0[$0050] + jp Timer + +SECTION "serial", ROM0[$0058] + jp Serial + +SECTION "joypad", ROM0[$0060] + reti + + +SECTION "Header", ROM0[$0100] + +Start:: +; Nintendo requires all Game Boy ROMs to begin with a nop ($00) and a jp ($C3) +; to the starting address. + nop + jp _Start + +; The Game Boy cartridge header data is patched over by rgbfix. +; This makes sure it doesn't get used for anything else. + + ds $0150 - @, $00 |