--- a/master/slave.h	Mon Jan 26 13:22:05 2009 +0000
+++ b/master/slave.h	Mon Jan 26 13:28:19 2009 +0000
@@ -115,6 +115,10 @@
     ec_slave_state_t current_state; /**< Current application state. */
     unsigned int error_flag; /**< Stop processing after an error. */
     unsigned int force_config; /**< Force (re-)configuration. */
+    uint16_t configured_rx_mailbox_offset;
+    uint16_t configured_rx_mailbox_size;
+    uint16_t configured_tx_mailbox_offset;
+    uint16_t configured_tx_mailbox_size;
 
     // base data
     uint8_t base_type; /**< Slave type. */