diff --git a/.gdbinit b/.gdbinit
index 346a05a..1a0b467 100644
--- a/.gdbinit
+++ b/.gdbinit
@@ -2,6 +2,10 @@ set disassemble-next-line on
 define tr
 	target remote | m68k-bdm-gdbserver pipe /dev/bdmcf3
 end
+define tbtr
+	target remote | m68k-bdm-gdbserver pipe /dev/tblcf3
+end
+
 tr
 source mcf5474.gdb