diff --git a/ports/mips/README b/ports/mips/README
index 5f778c8..d0ca2af 100644
--- a/ports/mips/README
+++ b/ports/mips/README
@@ -1,3 +1,8 @@
  * Required Ubuntu packages: qemu, qemu-kvm-extras
+   * Lucid 0.12.3 no good, better to install from source, make && sudo make install
  * Compiler: CodeSourcery
  * Run test: qemu-system-mips -M mips -m 128 -kernel build/kern1.elf -nographic
+
+ * GDB: Add -S -s to qemu startup
+ * mips-linux-gnu-gdb, target remote localhost:1234, file build/mutex5.elf
+ * ddd ---debugger mips-linux-gnu-gdb build/mutex5.elf