diff --git a/config.org b/config.org
index 125ab96..44c9f66 100644
--- a/config.org
+++ b/config.org
@@ -1054,6 +1054,24 @@
      (use-package forth-mode)
    #+end_src
 
+** Fasm
+   The =fasm-mode= package wasn't on MELPA or ELPA, so I've instead
+   added it as a submodule of this repo.  We therefore need to add it
+   to the load path:
+
+   #+begin_src emacs-lisp
+     (let* ((home (getenv "HOME"))
+            (path (concat home "/.emacs.d/fasm-mode")))
+       (add-to-list 'load-path path))
+     (autoload 'fasm-mode "fasm-mode")
+   #+end_src
+
+   And then use it for =.asm= files:
+
+   #+begin_src emacs-lisp
+     (add-to-list 'auto-mode-alist '("\\.asm\\'" . fasm-mode))
+   #+end_src
+
 * Tool Integrations
 ** Git
    =magit= is truly a wonderful creation! Add keybinding for