The PDP 8 and 11 and cool front panels. I recall on our PDP 11/40 if the separate module that handled the boot failed, you had to toggle the boot loader in by

The PDP 8 and 11 and cool front panels. I recall on our PDP 11/40 if the separate module that handled the boot failed, you had to toggle the boot loader in by hand using OCD (octal coded decimal) which was a pain.