diff --git a/clients/tde/src/part/fpgaview/part.cpp b/clients/tde/src/part/fpgaview/part.cpp
index 7ddec7d..36809c2 100644
--- a/clients/tde/src/part/fpgaview/part.cpp
+++ b/clients/tde/src/part/fpgaview/part.cpp
@@ -1203,8 +1203,12 @@ void FPGAViewPart::receiveInputStatesFromRemoteFPGA() {
 			m_dataMemoryImageHeight = newSize;
 			m_base->groupInputImage->setTitle(TQString("Input Image (%1x%2):").arg(m_dataMemoryImageWidth).arg(m_dataMemoryImageHeight));
 			m_base->groupOutputImage->setTitle(TQString("Output Image (%1x%2):").arg(m_dataMemoryImageWidth).arg(m_dataMemoryImageHeight));
-			m_inputImageViewer->resize(m_dataMemoryImageWidth, m_dataMemoryImageHeight);
-			m_outputImageViewer->resize(m_dataMemoryImageWidth, m_dataMemoryImageHeight);
+			if (m_inputImageViewer) {
+				m_inputImageViewer->resize(m_dataMemoryImageWidth, m_dataMemoryImageHeight);
+			}
+			if (m_outputImageViewer) {
+				m_outputImageViewer->resize(m_dataMemoryImageWidth, m_dataMemoryImageHeight);
+			}
 			m_dataMemorySizePrev = m_dataMemorySize;
 		}
 
diff --git a/fpga/gpmc/xilinx/common/main.v b/fpga/gpmc/xilinx/common/main.v
index 370c3a2..a54de0d 100644
--- a/fpga/gpmc/xilinx/common/main.v
+++ b/fpga/gpmc/xilinx/common/main.v
@@ -53,7 +53,7 @@ module main(
 	input [3:0] sseg_mux,
 	input [7:0] sseg_data);
 
-	parameter RAM_ADDR_BITS = 14;
+	parameter RAM_ADDR_BITS = 15;
 
 	reg [15:0] sixteen_bit_io_in;
 	reg [15:0] sixteen_bit_io_out;
@@ -309,6 +309,7 @@ module main(
 			// 0x0a: User process register
 			//       Bit 0: User processing start
 			//       Bit 1: User processing done (read only)
+			// 0x0b: Number of address bits of DSP RAM (read only)
 			// 0x20 - 0x3f: LCD data area
 			if (gpmc_wen_reg == 1'b0) begin
 				if (gpmc_address_reg[(RAM_ADDR_BITS-1):5] == 1) begin	// Address range 0x20 - 0x3f
@@ -380,6 +381,9 @@ module main(
 							gpmc_data_out[1] = userproc_done;
 							gpmc_data_out[7:2] = 0;
 						end
+						11: begin
+							gpmc_data_out = RAM_ADDR_BITS;
+						end
 						default: begin
 							gpmc_data_out = 0;
 						end
diff --git a/fpga/gpmc/xilinx/numato/spartan6/xc6slx9/main.ucf b/fpga/gpmc/xilinx/numato/spartan6/xc6slx9/main.ucf
index d6ccdcc..02c10c4 100644
--- a/fpga/gpmc/xilinx/numato/spartan6/xc6slx9/main.ucf
+++ b/fpga/gpmc/xilinx/numato/spartan6/xc6slx9/main.ucf
@@ -33,6 +33,7 @@ NET "gpmc_address<11>" LOC = "B8" |IOSTANDARD = "LVCMOS33";
 NET "gpmc_address<12>" LOC = "C7" |IOSTANDARD = "LVCMOS33";
 NET "gpmc_address<13>" LOC = "D6" |IOSTANDARD = "LVCMOS33";
 NET "gpmc_address<14>" LOC = "B4" |IOSTANDARD = "LVCMOS33";
+NET "gpmc_address<15>" LOC = "B2" |IOSTANDARD = "LVCMOS33";
 
 NET "usermem_wen"  LOC = "V16" |IOSTANDARD = "LVCMOS33";
 NET "usermem_wait"  LOC = "T18" |SLEW = FAST |IOSTANDARD = "LVCMOS33";
@@ -63,6 +64,7 @@ NET "usermem_address<11>" LOC = "N16" |IOSTANDARD = "LVCMOS33";
 NET "usermem_address<12>" LOC = "L16" |IOSTANDARD = "LVCMOS33";
 NET "usermem_address<13>" LOC = "N14" |IOSTANDARD = "LVCMOS33";
 NET "usermem_address<14>" LOC = "M13" |IOSTANDARD = "LVCMOS33";
+NET "usermem_address<15>" LOC = "K13" |IOSTANDARD = "LVCMOS33";
 
 NET "four_bit_leds<0>" LOC = "G13" |IOSTANDARD = "LVCMOS33";
 NET "four_bit_leds<1>" LOC = "H16" |IOSTANDARD = "LVCMOS33";