VGA: Arrange screen writing functions to minimize stack.

Pass pointer to cursor position into write_string and write_teletype.
Handle flag processing of write_string in handle_1013.
Implement a tail-recursive scroll_one() function.
1 file changed
tree: 58c6b1df88a22672b65c30ab9324da1e483ebdc6
  1. .gitignore
  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. TODO
  7. src/
  8. tools/
  9. vgasrc/