From 60241440a87b0a407fa3b1389e3b59aea4cc581e Mon Sep 17 00:00:00 2001
From: Paul Kania <pawel.kania@onet.pl>
Date: Fri, 25 Oct 2019 19:49:53 +0200
Subject: [PATCH] Fix typo inside saving routine for Raspberry Pi Zero

---
 src/DiskImage.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/DiskImage.h b/src/DiskImage.h
index 5dc3adf..e114279 100644
--- a/src/DiskImage.h
+++ b/src/DiskImage.h
@@ -117,7 +117,7 @@ public:
 		else
 		{
 			TestDirty(track, (dataOld & bitMask) != 0);
-			tracks[(track << 13) + byte] &= bitMask;
+			tracks[(track << 13) + byte] &= ~bitMask;
 		}
 #else
 		u8 dataOld = tracks[track][byte];