diff --git a/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs b/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs
index c86bd515c1..3568bfce3e 100644
--- a/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs
@@ -170,9 +170,6 @@ namespace BizHawk.Emulation.Cores.ColecoVision
 			else if (Mode2Bit) TmsMode = 2;
 			else if (Mode3Bit) TmsMode = 3;
 			else TmsMode = 0;
-
-			if (TmsMode == 1)
-				throw new Exception("TMS video mode 1! please tell vecna which game uses this!");
 		}
 
 		private void RenderScanline(int scanLine)
@@ -195,7 +192,11 @@ namespace BizHawk.Emulation.Cores.ColecoVision
 				RenderBackgroundM3(scanLine);
 				RenderTmsSprites(scanLine);
 			}
-			// This may seem silly but if I ever implement mode 1, sprites are not rendered in that.
+			else if (TmsMode == 1)
+			{
+				RenderBackgroundM1(scanLine);
+				// no sprites (text mode)
+			}
 		}
 
 		private void RenderBackgroundM0(int scanLine)
@@ -233,6 +234,39 @@ namespace BizHawk.Emulation.Cores.ColecoVision
 			}
 		}
 
+		private void RenderBackgroundM1(int scanLine)
+		{
+			if (DisplayOn == false)
+			{
+				Array.Clear(FrameBuffer, scanLine * 256, 256);
+				return;
+			}
+
+			int yc = scanLine / 8;
+			int yofs = scanLine % 8;
+			int FrameBufferOffset = scanLine * 256;
+			int PatternNameOffset = TmsPatternNameTableBase + (yc * 40);
+			int ScreenBGColor = PaletteTMS9918[Registers[7] & 0x0F];
+
+			for (int xc = 0; xc < 40; xc++)
+			{
+				int pn = VRAM[PatternNameOffset++];
+				int pv = VRAM[PatternGeneratorBase + (pn * 8) + yofs];
+				int colorEntry = Registers[7];
+				int fgIndex = (colorEntry >> 4) & 0x0F;
+				int bgIndex = colorEntry & 0x0F;
+				int fgColor = fgIndex == 0 ? ScreenBGColor : PaletteTMS9918[fgIndex];
+				int bgColor = bgIndex == 0 ? ScreenBGColor : PaletteTMS9918[bgIndex];
+
+				FrameBuffer[FrameBufferOffset++] = ((pv & 0x80) > 0) ? fgColor : bgColor;
+				FrameBuffer[FrameBufferOffset++] = ((pv & 0x40) > 0) ? fgColor : bgColor;
+				FrameBuffer[FrameBufferOffset++] = ((pv & 0x20) > 0) ? fgColor : bgColor;
+				FrameBuffer[FrameBufferOffset++] = ((pv & 0x10) > 0) ? fgColor : bgColor;
+				FrameBuffer[FrameBufferOffset++] = ((pv & 0x08) > 0) ? fgColor : bgColor;
+				FrameBuffer[FrameBufferOffset++] = ((pv & 0x04) > 0) ? fgColor : bgColor;
+			}
+		}
+
 		void RenderBackgroundM2(int scanLine)
 		{
 			if (DisplayOn == false)