From d9dcab1271568f1c4bf70e97b707fb8cf42e10fd Mon Sep 17 00:00:00 2001
From: sanine-a <sanine.not@pm.me>
Date: Tue, 23 May 2023 11:52:02 -0500
Subject: fix core boundary wrapping

---
 src/vm/core.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/vm/core.js')

diff --git a/src/vm/core.js b/src/vm/core.js
index 6303ee5..9b0fe77 100644
--- a/src/vm/core.js
+++ b/src/vm/core.js
@@ -19,7 +19,12 @@ class Core {
 
 
 	normalize(pc, value) {
-		return (pc + value) % this.data.length;
+		const v = (pc + value) % this.data.length;
+		if (v < 0) {
+			return v + this.data.length;
+		} else {
+			return v;
+		}
 	}
 
 
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