Index: firmware/App/Services/FPGA.c
===================================================================
diff -u -rd91a24c730aeb5cd7e3eba9ef4eca78e442911f8 -rc9e1a93ccd8cfbdc9737c8ffc9e6a3dbe9ba7c44
--- firmware/App/Services/FPGA.c	(.../FPGA.c)	(revision d91a24c730aeb5cd7e3eba9ef4eca78e442911f8)
+++ firmware/App/Services/FPGA.c	(.../FPGA.c)	(revision c9e1a93ccd8cfbdc9737c8ffc9e6a3dbe9ba7c44)
@@ -1232,28 +1232,33 @@
 /*********************************************************************//**
  * @brief
  * The getFPGAArterialPressure function gets the latest arterial pressure reading.
+ * High byte indicates alarm status for ADC channel.
+ * Low 24-bits are channel reading.  Subtract 2^23 from low 24 bits to get
+ * signed channel reading.
  * @details
  * Inputs : fpgaSensorReadings
  * Outputs : none
  * @return last arterial pressure reading
  *************************************************************************/
-S32 getFPGAArterialPressure( void )
+U32 getFPGAArterialPressure( void )
 {
-    return (S32)( fpgaSensorReadings.adc1Channel0 & MASK_OFF_U32_MSB ) - 0x800000;
+    return fpgaSensorReadings.adc1Channel0;
 }
 
 /*********************************************************************//**
  * @brief
  * The getFPGAVenousPressure function gets the venous arterial pressure reading.
+ * The high 2 bits are status bits: 00=ok, 01=cmd mode, 10=stale data, 11=diag
+ * The low 14 bits are data.  Zero is at 1638.  Values above are positive,
+ * below are negative.
  * @details
  * Inputs : fpgaSensorReadings
  * Outputs : none
  * @return last venous pressure reading
  *************************************************************************/
 U16 getFPGAVenousPressure( void )
 {
-    // 14-bits
-    return fpgaSensorReadings.venousPressure & 0x3FFF;
+    return fpgaSensorReadings.venousPressure;
 }
 
 /*********************************************************************//**