diff --git a/src/engine/platform/c140.cpp b/src/engine/platform/c140.cpp
index af8ff2f43..3718ad65c 100644
--- a/src/engine/platform/c140.cpp
+++ b/src/engine/platform/c140.cpp
@@ -23,7 +23,7 @@
 #include <math.h>
 #include <map>
 
-#define CHIP_FREQBASE 12582912
+#define CHIP_FREQBASE (is219?74448896:12582912)
 
 #define rWrite(a,v) {if(!skipRegisterWrites) {writes.push(QueuedWrite(a,v)); if(dumpWrites) addWrite(a,v); }}