To install osso-xterm, make sure you have the following repository added: Catalogue Name: Maemo Main Web Address: http://repository.maemo.org Distribution: bora Components: free non-free Update and you should see osso-xterm in the list. You don't need the non-free distribution but it does no harm to include it.
There is another version of osso-xterm which is not compatible, if you are having difficulty installing osso-xterm:Disable all other repositories except for repository.maemo.org Refresh the package list Look for osso-xterm without a stylized logo