Index: firmware/App/Services/Interrupts.c
===================================================================
diff -u -r94a190522ce398399c7b93c59f788d7666ec0060 -ref12a43be17c4f1ed13302f81ca616a483850483
--- firmware/App/Services/Interrupts.c	(.../Interrupts.c)	(revision 94a190522ce398399c7b93c59f788d7666ec0060)
+++ firmware/App/Services/Interrupts.c	(.../Interrupts.c)	(revision ef12a43be17c4f1ed13302f81ca616a483850483)
@@ -196,25 +196,11 @@
                 signalFPGAReceiptCompleted();
                 break;
 
-#ifdef DEBUG_ENABLED
-            case DMA_CH1:  // PC receive channel
-                clearSCI1DMAReceiveInterrupt();
-                // handle received packet from PC
-                handleUARTMsgRecvPacketInterrupt();
-                break;
-#endif
             case DMA_CH2:  // FPGA transmit channel
                 clearSCI2DMATransmitInterrupt();
                 signalFPGATransmitCompleted();
                 break;
 
-#ifdef DEBUG_ENABLED
-            case DMA_CH3:  // PC transmit channel
-                clearSCI1DMATransmitInterrupt();
-                // send next pending packet to PC (if any)
-                handleUARTMsgXmitPacketInterrupt();
-                break;
-#endif
             default:
                 // TODO - ignore?
                 break;