diff --git a/BizHawk.Emulation/Consoles/Sega/Genesis/GenVDP.Render.cs b/BizHawk.Emulation/Consoles/Sega/Genesis/GenVDP.Render.cs
index 107f344cb7..770389d0e1 100644
--- a/BizHawk.Emulation/Consoles/Sega/Genesis/GenVDP.Render.cs
+++ b/BizHawk.Emulation/Consoles/Sega/Genesis/GenVDP.Render.cs
@@ -43,8 +43,8 @@ namespace BizHawk.Emulation.Consoles.Sega
             // Its way simple in comparison. But the PCE sprite renderer is way worse than gen.
             for (int x = 0; x < FrameWidth; x++)
             {
-                int xTile = Math.Abs(((x - xScroll) / 8) % NameTableWidth);
-                int xOfs = Math.Abs(x - xScroll) & 7;
+                int xTile = Math.Abs(((x + (1024-xScroll)) / 8) % NameTableWidth);
+                int xOfs = Math.Abs((x + (1024-xScroll)) & 7);
                 int cellOfs = nameTableBase + (yTile * NameTableWidth * 2) + (xTile * 2);
                 int nameTableEntry = VRAM[cellOfs] | (VRAM[cellOfs+1] << 8);
                 int patternNo = nameTableEntry & 0x7FF;
@@ -71,7 +71,8 @@ namespace BizHawk.Emulation.Consoles.Sega
         {
             // todo scroll values
             int hscroll = VRAM[HScrollTableAddr + 0] | (VRAM[HScrollTableAddr + 1] << 8);
-            hscroll &= 0x3FFF;
+            hscroll &= 0x3FF;
+            //Console.WriteLine("ScrollA: " + hscroll);
             //hscroll = 24;
             int vscroll = VSRAM[0] & 0x3FFF;
             RenderBackgroundScanline(hscroll, vscroll, NameTableAddrA, 2, 5);
@@ -80,7 +81,8 @@ namespace BizHawk.Emulation.Consoles.Sega
         void RenderScrollB()
         {
             int hscroll = VRAM[HScrollTableAddr + 2] | (VRAM[HScrollTableAddr + 3] << 8);
-            hscroll &= 0x3FFF;
+            hscroll &= 0x3FF;
+            //Console.WriteLine("ScrollB: " + hscroll);
             //hscroll = 24;
             int vscroll = VSRAM[1] & 0x3FFF;
             RenderBackgroundScanline(hscroll, vscroll, NameTableAddrB, 1, 4);