b839b	ac	maindec-8e-d6ab-d	PDP8E-XY8E PLOTTER CONTROL & DISPLAY
b841b	ak	maindec-8e-d6ab-pb	PDP8E-XY8E PLOTTER CONTROL & DISPLAY
b839b	af	maindec-8e-d6ab-dn	PDP8E-XY8E PLOTTER CONTROL & DISPLAY