diff --git a/source/linux/data.cpp b/source/linux/data.cpp
index ac7c3f16..eee6c9e4 100644
--- a/source/linux/data.cpp
+++ b/source/linux/data.cpp
@@ -52,8 +52,6 @@ static IPropertySheet * sg = NULL;
 IPropertySheet&	sg_PropertySheet = *sg;
 static double g_fMHz		= 1.0;			// Affected by Config dialog's speed slider bar
 
-DWORD     g_uHalfScanLines = 1; // drop 50% scan lines for a more authentic look
-
 void SetCurrentCLK6502(void)
 {
   static DWORD dwPrevSpeed = (DWORD) -1;
diff --git a/source/linux/dummies.cpp b/source/linux/dummies.cpp
index 7e04914e..b31da74e 100644
--- a/source/linux/dummies.cpp
+++ b/source/linux/dummies.cpp
@@ -12,6 +12,7 @@
 #include "NTSC.h"
 
 static bool bVideoScannerNTSC = true;  // NTSC video scanning (or PAL)
+static VideoStyle_e g_eVideoStyle = VS_HALF_SCANLINES;
 
 // video scanner constants
 int const kHBurstClock      =    53; // clock when Color Burst starts
@@ -147,6 +148,11 @@ UINT GetFrameBufferWidth(void)
   return 0;
 }
 
+bool IsVideoStyle(VideoStyle_e mask)
+{
+	return (g_eVideoStyle & mask) != 0;
+}
+
 bool    VideoGetVblBar(DWORD uExecutedCycles)
 {
   // get video scanner position
diff --git a/source/linux/state.cpp b/source/linux/state.cpp
index 9f8dc0f0..2b9043df 100644
--- a/source/linux/state.cpp
+++ b/source/linux/state.cpp
@@ -23,6 +23,7 @@ bool CSuperSerialCard::LoadSnapshot(YamlLoadHelper&, unsigned int, unsigned int)
 std::string CSuperSerialCard::GetSnapshotCardName() { return ""; }
 std::string MB_GetSnapshotCardName() { return ""; }
 void MB_Reset() { }
+void MB_InitializeForLoadingSnapshot() { }
 void Phasor_LoadSnapshot(YamlLoadHelper&, unsigned int, unsigned int) { }
 void Phasor_SaveSnapshot(YamlSaveHelper&, unsigned int) { }
 std::string Phasor_GetSnapshotCardName() { return ""; }