diff options
| author | Miquel Sabaté Solà <msabate@suse.com> | 2023-10-24 17:40:19 +0200 |
|---|---|---|
| committer | Miquel Sabaté Solà <mikisabate@gmail.com> | 2025-02-04 20:58:36 +0100 |
| commit | 149020464517ff3d021eef5ccd50d3939ad463e6 (patch) | |
| tree | 056ec1919fe0c0d515e7a0a414916307b768ef84 /space/src/vectors/nmi.s | |
| parent | be2414f5b11b182998fca7e87712ff0502c8ee93 (diff) | |
| download | code.nes-149020464517ff3d021eef5ccd50d3939ad463e6.tar.gz code.nes-149020464517ff3d021eef5ccd50d3939ad463e6.zip | |
Lay out a proper structure for the project
Let's divide things by topic instead of a broad "examples" directory.
This will allow for simple files to co-exist together with full-blown
projects.
Signed-off-by: Miquel Sabaté Solà <msabate@suse.com>
Diffstat (limited to 'space/src/vectors/nmi.s')
| -rw-r--r-- | space/src/vectors/nmi.s | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/space/src/vectors/nmi.s b/space/src/vectors/nmi.s new file mode 100644 index 0000000..4bc3dde --- /dev/null +++ b/space/src/vectors/nmi.s @@ -0,0 +1,14 @@ +;; Non-Maskable Interrupts handler. +nmi: + ;; As mentioned on the `main` subroutine, rendering will be skipped until + ;; the proper flag is set. + bit $20 + bpl @next + + ;; We can start rendering stuff. + OAM_WRITE_SPRITES + + ;; And unset the render flag so the `main` code is unblocked. + UNSET_RENDER_FLAG +@next: + rti |