-               #if BOARD == BOARD_XPLAIN\r
-                       #undef  ENABLE_SPI_PROTOCOL\r
-                       #define ENABLE_PDI_PROTOCOL\r
+               #if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))\r
+                       #undef ENABLE_ISP_PROTOCOL\r
+                       \r
+                       #if !defined(ENABLE_PDI_PROTOCOL)\r
+                               #define ENABLE_PDI_PROTOCOL\r
+                       #endif\r