https://gitlab.com/jgemu/jgrf/-/commit/b0cadbd7829c76e4fdb1a99961a17d4cf23d31a4

From b0cadbd7829c76e4fdb1a99961a17d4cf23d31a4 Mon Sep 17 00:00:00 2001
From: Rupert Carmichael <5050061-carmiker@users.noreply.gitlab.com>
Date: Tue, 5 Aug 2025 01:15:20 -0400
Subject: [PATCH] detect: Add NSF detection

---
 src/detect.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/detect.c b/src/detect.c
index 8522f4c..025d057 100644
--- a/src/detect.c
+++ b/src/detect.c
@@ -94,6 +94,7 @@ static extmap_t extmap[] = {
     {"nes", "nes"},
     {"ngc", "ngp"},
     {"ngp", "ngp"},
+    {"nsf", "nes"},
     {"pce", "pce"},
     {"rom", "coleco"},
     {"sfc", "snes"},