--- a/src/hwos.inc	Thu Sep 10 13:05:26 2015 +0200
+++ b/src/hwos.inc	Tue Sep 15 18:11:08 2015 +0200
@@ -396,6 +396,7 @@
 ;---- RS232 temp variables
 uart1_temp      res 1
 uart2_temp      res 1
+uart3_temp      res 1
 
 ;---- Data for math subroutines
 divA            res 2
@@ -491,7 +492,6 @@
 o2_ppo2_sensor1     res 1       ; Sensor1 ppO2 (in 0.01bar steps)
 o2_ppo2_sensor2     res 1       ; Sensor2 ppO2 (in 0.01bar steps)
 o2_ppo2_sensor3     res 1       ; Sensor3 ppO2 (in 0.01bar steps)
-hud_battery_mv      res 2
 hud_status_byte     res 1
 ;Status Byte/
 #DEFINE hud_connection_ok       hud_status_byte,0	;Bit0 = 1 -> HUD connection ok
@@ -527,6 +527,8 @@
 s8_rawdata_sensor2   res 3  ; 24bit A/D raw data from S8 HUD sensor 2
 s8_rawdata_sensor3   res 3  ; 24bit A/D raw data from S8 HUD sensor 3
 
+hud_battery_mv      res 2   ; hud/ppo2 monitor battery voltage in mV
+
 ;-----------------------------------------------------------------------------
 ; Reserve BANK2 for general purpose buffer (strings, images, etc).
 ; NOTE: Needs to be aligned with a bank (LOW(buffer)==0).