Various minor cleanups.
diff --git a/TODO b/TODO
index fa01392..bd3bbe9 100644
--- a/TODO
+++ b/TODO
@@ -1,5 +1,9 @@
 Find out why ubuntu compiles are failing.  Find work around.
+Code assumes ebda segment is static - it doesn't read 0x40e.
+See if using an ld script for 16bit mode is a good idea.
 The __call16 code does a long jump to the interrupt trampolines - this
 is unnecessary.