diff --git a/projects/mips_sys/ise101/mips_sys/ucf/systest.ucf b/projects/mips_sys/ise101/mips_sys/ucf/systest.ucf
index a6af4a5..c359f73 100644
--- a/projects/mips_sys/ise101/mips_sys/ucf/systest.ucf
+++ b/projects/mips_sys/ise101/mips_sys/ucf/systest.ucf
@@ -75,12 +75,26 @@ NET sys_error<*> TIG;
 ////////////////////////////////////////////////////////////////////////////
 // RS-232
 ////////////////////////////////////////////////////////////////////////////
-NET sys_rx LOC = W2;
-NET sys_rx IOSTANDARD = LVCMOS33;
-NET sys_rx TIG;
-NET "sys_tx" LOC = "W1";
-NET sys_tx IOSTANDARD = LVCMOS33;
-NET "sys_tx" TIG;
+NET sys_uart0_rx LOC = W2;
+NET sys_uart0_rx IOSTANDARD = LVCMOS33;
+NET sys_uart0_rx TIG;
+NET sys_uart0_tx LOC = W1;
+NET sys_uart0_tx IOSTANDARD = LVCMOS33;
+NET sys_uart0_tx TIG;
+
+NET sys_uart1_rx LOC = AF24;
+NET sys_uart1_rx IOSTANDARD = LVCMOS33;
+NET sys_uart1_rx TIG;
+NET sys_uart1_tx LOC = AE24;
+NET sys_uart1_tx IOSTANDARD = LVCMOS33;
+NET sys_uart1_tx TIG;
+
+NET sys_uart2_rx LOC = AD22;
+NET sys_uart2_rx IOSTANDARD = LVCMOS33;
+NET sys_uart2_rx TIG;
+NET sys_uart2_tx LOC = AB21;
+NET sys_uart2_tx IOSTANDARD = LVCMOS33;
+NET sys_uart2_tx TIG;
 
 ////////////////////////////////////////////////////////////////////////////
 // Buttons, LEDs, and DIP Switches