Update COPJMP

diff --git a/custom.cpp b/custom.cpp
index b4e7b32d70a5f3ab62e3f476fd5bf38711ebde4b..e93851286e1deeae42e4aea64b91e214a10491e8 100644 (file)
--- a/custom.cpp
+++ b/custom.cpp
@@ -3047,12 +3047,14 @@ static uaecptr getstrobecopip(void)
 
 static void COPJMP(int num, bool bsce)
 {
-       cop_state.startstrobe = 0;
-       cop_state.startstrobe |= 8 << 0;
-       cop_state.startstrobe |= num << 4;
+       uae_u32 st = 0;
+       
+       st |= 8 << 0;
+       st |= num << 4;
        if (!bsce) {
-               cop_state.startstrobe <<= 4;
+               cop_state.startstrobe |= st << 4;
        } else {
+               cop_state.startstrobe |= st << 0;
                cop_state.vblankip = cop1lc;
        }