diff --git a/src/AppRegsImpl.tt b/src/AppRegsImpl.tt
index 4a9ef85..1c4df39 100644
--- a/src/AppRegsImpl.tt
+++ b/src/AppRegsImpl.tt
@@ -109,8 +109,9 @@ if (outputPins.Count > 0)
     foreach (var pin in outputPins)
     {
         var pinName = FirmwareNamingConvention.Instance.Apply(pin.Key);
+        var pinState = pin.Value.InitialState > 0 ? "set" : "clr";
 #>
-    clr_<#= pinName #>;
+    <#= pinState #>_<#= pinName #>;
 <#
     }
 #>
diff --git a/tests/ExpectedOutput/device.app_ios_and_regs.c b/tests/ExpectedOutput/device.app_ios_and_regs.c
index 25e3000..0f4f06d 100644
--- a/tests/ExpectedOutput/device.app_ios_and_regs.c
+++ b/tests/ExpectedOutput/device.app_ios_and_regs.c
@@ -39,6 +39,7 @@ void init_ios(void)
     io_pin2out(&PORTE, 7, OUT_IO_DIGITAL, IN_EN_IO_EN);                  // POKE1_VALVE
     io_pin2out(&PORTF, 6, OUT_IO_DIGITAL, IN_EN_IO_EN);                  // POKE2_LED
     io_pin2out(&PORTF, 7, OUT_IO_DIGITAL, IN_EN_IO_EN);                  // POKE2_VALVE
+    io_pin2out(&PORTC, 0, OUT_IO_WIREDAND, IN_EN_IO_EN);                 // CS0_1
 
     /* Initialize output pins */
     clr_DO3;
@@ -54,6 +55,7 @@ void init_ios(void)
     clr_POKE1_VALVE;
     clr_POKE2_LED;
     clr_POKE2_VALVE;
+    set_CS0_1;
 }
 
 /************************************************************************/
diff --git a/tests/ExpectedOutput/device.app_ios_and_regs.h b/tests/ExpectedOutput/device.app_ios_and_regs.h
index f70e0c3..a2e61ac 100644
--- a/tests/ExpectedOutput/device.app_ios_and_regs.h
+++ b/tests/ExpectedOutput/device.app_ios_and_regs.h
@@ -40,6 +40,7 @@ void init_ios(void);
 // POKE1_VALVE             Description: Poke 1 Valve
 // POKE2_LED               Description: Poke 2 digital output
 // POKE2_VALVE             Description: Poke 2 Valve
+// CS0_1                   Description: CS0_1 / CS_ADC0
 
 /* DO3 */
 #define set_DO3 set_io(PORTC, 0)
@@ -119,6 +120,12 @@ void init_ios(void);
 #define tgl_POKE2_VALVE toggle_io(PORTF, 7)
 #define read_POKE2_VALVE read_io(PORTF, 7)
 
+/* CS0_1 */
+#define set_CS0_1 set_io(PORTC, 0)
+#define clr_CS0_1 clear_io(PORTC, 0)
+#define tgl_CS0_1 toggle_io(PORTC, 0)
+#define read_CS0_1 read_io(PORTC, 0)
+
 /************************************************************************/
 /* Registers' structure                                                 */
 /************************************************************************/
diff --git a/tests/Metadata/device.ios.yml b/tests/Metadata/device.ios.yml
index 1cabdf6..061b8b2 100644
--- a/tests/Metadata/device.ios.yml
+++ b/tests/Metadata/device.ios.yml
@@ -164,3 +164,11 @@ DI3:
   interruptPriority: low
   interruptNumber: 0
   description: Input DI3
+CS0_1:
+  port: PORTC
+  pinNumber: 0
+  direction: output
+  allowRead: true
+  pinMode: wiredAnd
+  initialState: high
+  description: CS0_1 / CS_ADC0