--- a/.emacs-my	Thu Oct 15 15:45:15 2009 +0300
+++ b/.emacs-my	Fri Oct 16 11:46:00 2009 +0300
@@ -858,6 +858,8 @@
 ;; (setq-default asm-comment-char 59)
 (add-hook 'asm-mode-hook '(lambda () (setq comment-start "/*") (setq comment-end "*/")) t)
 
+(add-to-list 'auto-mode-alist '("\\.\\([sS]79\\|[sS]\\)\\'" . asm-mode))
+
 ;; (add-hook 'asm-mode-hook '(lambda () (local-unset-key ":")))
 ;; (add-hook 'asm-mode-hook '(lambda () (local-set-key ":" ":")))