update contributing guidelines

2024-02-24 21:27:18 -05:00 · 2024-02-24 21:27:18 -05:00 · 20bbd704e2
parent e76c46e711
commit 20bbd704e2
1 changed files with 3 additions and 0 deletions
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -94,6 +94,9 @@ just put your demo song in `demos/`! be noted there are some guidelines:
 - avoid Nintendo song covers.
 - avoid big label song covers.
 - low effort compositions/covers may not be accepted at all.
+- the following systems are not acceptable:
+  - YMU759/MA-2: exists only for compatibility.
+  - Pong: it is a joke system.

 # Finishing