diff --git a/target/godil_250/_icez80/board.ucf b/target/godil_250/_icez80/board.ucf
index 8bc39d4..3827599 100644
--- a/target/godil_250/_icez80/board.ucf
+++ b/target/godil_250/_icez80/board.ucf
@@ -74,6 +74,9 @@ NET "test4" LOC="P91" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 4 ;
 # so we connect it to an unused pin
 NET "DOE_n" LOC="P99"  | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 4 ;
 
+# This input controls whether the idle mode includes M1 cycles
+NET "mode" LOC="P88" | IOSTANDARD = LVCMOS33 ;
+
 # NET ""  LOC="P48" | IOSTANDARD = LVCMOS33 ; # connector pin E2
 # NET ""  LOC="P49" | IOSTANDARD = LVCMOS33 ; # connector pin E3
 # NET ""  LOC="P27" | IOSTANDARD = LVCMOS33 ; # connector pin E4
diff --git a/target/godil_500/icez80/board.ucf b/target/godil_500/icez80/board.ucf
index 8bc39d4..94484ac 100644
--- a/target/godil_500/icez80/board.ucf
+++ b/target/godil_500/icez80/board.ucf
@@ -1,5 +1,8 @@
 
 NET "CLK_n" CLOCK_DEDICATED_ROUTE = FALSE;
+TIMESPEC TS_clk_period_clk_n = PERIOD "clk_period_grp_clk_n" 125ns LOW;
+
+NET "clock49" CLOCK_DEDICATED_ROUTE = FALSE;
 
 NET "clock49"  LOC="P89" | IOSTANDARD = LVCMOS33 | PERIOD = 20.35ns  ; # 49.152 MHz Oscillator
 
@@ -74,6 +77,9 @@ NET "test4" LOC="P91" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 4 ;
 # so we connect it to an unused pin
 NET "DOE_n" LOC="P99"  | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 4 ;
 
+# This input controls whether the idle mode includes M1 cycles
+NET "mode" LOC="P88" | IOSTANDARD = LVCMOS33 ;
+
 # NET ""  LOC="P48" | IOSTANDARD = LVCMOS33 ; # connector pin E2
 # NET ""  LOC="P49" | IOSTANDARD = LVCMOS33 ; # connector pin E3
 # NET ""  LOC="P27" | IOSTANDARD = LVCMOS33 ; # connector pin E4
diff --git a/target/lx9_jason/icez80/board.ucf b/target/lx9_jason/icez80/board.ucf
index 9cecc02..8601e6a 100644
--- a/target/lx9_jason/icez80/board.ucf
+++ b/target/lx9_jason/icez80/board.ucf
@@ -65,8 +65,11 @@ NET "avr_TxD"  LOC="P51"  | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 8 ;
 NET "avr_RxD"  LOC="P55"  | IOSTANDARD = LVCMOS33                           ;
 
 # External trigger inputs
-NET "trig<0>"  LOC="P126" | IOSTANDARD = LVCMOS33                           ;
-NET "trig<1>"  LOC="P127" | IOSTANDARD = LVCMOS33                           ;
+NET "trig<0>"  LOC="P126" | IOSTANDARD = LVCMOS33 | PULLUP ;
+NET "trig<1>"  LOC="P127" | IOSTANDARD = LVCMOS33 | PULLUP ;
+
+# This input controls whether the idle mode includes M1 cycles
+NET "mode"     LOC="P140" | IOSTANDARD = LVCMOS33 | PULLUP ;
 
 # Test outputs
 NET "test1"    LOC="P138" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 8 ; # led1
diff --git a/target/lx9_jason_flipped/icez80/board.ucf b/target/lx9_jason_flipped/icez80/board.ucf
index f2f6c0b..ec25b62 100644
--- a/target/lx9_jason_flipped/icez80/board.ucf
+++ b/target/lx9_jason_flipped/icez80/board.ucf
@@ -65,8 +65,11 @@ NET "avr_TxD"  LOC="P51"  | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 8 ;
 NET "avr_RxD"  LOC="P55"  | IOSTANDARD = LVCMOS33                           ;
 
 # External trigger inputs
-NET "trig<0>"  LOC="P126" | IOSTANDARD = LVCMOS33                           ;
-NET "trig<1>"  LOC="P127" | IOSTANDARD = LVCMOS33                           ;
+NET "trig<0>"  LOC="P126" | IOSTANDARD = LVCMOS33 | PULLUP ;
+NET "trig<1>"  LOC="P127" | IOSTANDARD = LVCMOS33 | PULLUP ;
+
+# This input controls whether the idle mode includes M1 cycles
+NET "mode"     LOC="P140" | IOSTANDARD = LVCMOS33 | PULLUP ;
 
 # Test outputs
 NET "test1"    LOC="P138" | IOSTANDARD = LVCMOS33 | SLEW = SLOW | DRIVE = 8 ; # led1