-Make header files work with either 32bit or 16bit code.
+Find out why ubuntu compiles are failing. Find work around.
-Fix makefiles so that they rebuild the required files automatically.
+Audit all sti/cli calls.
+
+Code assumes ebda segment is static - it doesn't read 0x40e.
+
+See if using an ld script for 16bit mode is a good idea.
-Make sure gdt/idt tables are properly aligned
+The __call16 code does a long jump to the interrupt trampolines - this
+is unnecessary.
+
+Fix makefiles so that they rebuild the required files automatically.
Cleanup setting of ES on GET/SET_BDA