diff --git a/src/boards/datalatch.c b/src/boards/datalatch.c
index 17c9f1c..53cd50b 100644
--- a/src/boards/datalatch.c
+++ b/src/boards/datalatch.c
@@ -30,7 +30,7 @@ static void (*WSync)(void);
 static DECLFW(LatchWrite) {
 //	FCEU_printf("bs %04x %02x\n",A,V);
 	if (bus_conflict)
-		latche = (V == CartBR(A)) ? V : 0;
+		latche = V & CartBR(A);
 	else
 		latche = V;
 	WSync();