An old Tempo build finally "leaked" out recently in a flood of developer CDs. Included in it was a curiously-named enabler called DNA. Upon further inspection it appears to be (at least partially) a CHRP enabler. ScorchedEarth discovered this so I dug around it and took a pic of it open in Resorcerer:



There's also references to PC UART Serial Ports, COM1, COM2 etc.