From 14e443a65f7754973670902b7370527a772aa37f Mon Sep 17 00:00:00 2001
From: Andre Weissflog <floooh@gmail.com>
Date: Fri, 3 Jan 2025 19:07:18 +0100
Subject: [PATCH] m6569.h: fix sprite unit expand flag regression

---
 chips/m6569.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chips/m6569.h b/chips/m6569.h
index a46986f9..ee9b53f0 100644
--- a/chips/m6569.h
+++ b/chips/m6569.h
@@ -533,7 +533,7 @@ static void _m6569_io_update_sunit(m6569_t* vic, size_t i, uint8_t mx, uint8_t m
     /* 1. The expansion flip flop is set as long as the bit in MxYE in register
         $d017 corresponding to the sprite is cleared.
     */
-    su->expand |= ~(mye & mask);
+    su->expand |= ~mye & mask;
 }
 
 // read chip registers