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| author | Miquel Sabaté Solà <mikisabate@gmail.com> | 2025-03-13 22:52:49 +0100 |
|---|---|---|
| committer | Miquel Sabaté Solà <mikisabate@gmail.com> | 2025-03-13 22:52:49 +0100 |
| commit | 9ff2033e936689135210989a5fee057a4a13527e (patch) | |
| tree | dd41ffd78f451d28a554f105ff40017ed31106a2 /include/globals.s | |
| parent | 2627b459d9a19ce7f1b7f3a359dca3b30b66b34e (diff) | |
| download | jetpac.nes-9ff2033e936689135210989a5fee057a4a13527e.tar.gz jetpac.nes-9ff2033e936689135210989a5fee057a4a13527e.zip | |
Add a title and a main screens
This commit adds the skeleton for having a title and a main screen. For
now the title menu doesn't do much, as the selection is simply ignored,
but at least it already knows how to cycle between these two states.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
Diffstat (limited to 'include/globals.s')
| -rw-r--r-- | include/globals.s | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/globals.s b/include/globals.s index d22b217..f4e4861 100644 --- a/include/globals.s +++ b/include/globals.s @@ -29,6 +29,8 @@ ;; | Bit | Short name | Meaning when set | ;; |-----+------------+-------------------------------------------------------------| ;; | 7 | render | Game logic is over, block main code until NMI code is over. | - ;; | 6-0 | - | Unused | + ;; | 6 | ppu | PPU registers have to be touched | + ;; | 5-2 | - | Unused | + ;; | 1-0 | game | 0: title; 1: game; 2: game over, 3: game over (coin) | zp_flags = $20 .endscope |