Support external user interface services  * Only write to specific hw addresses with qemuprint on selected targets  * Don't output text once a user interface service is running    Queue it so the service can fetch the text
Support external user interface services
 * Only write to specific hw addresses with qemuprint on selected targets
 * Don't output text once a user interface service is running
   Queue it so the service can fetch the text

diodesign/diosix