My PDP11/40 had a high speed paper tape reader/punch when it was new (PC04 I think). I have the hardware, but not the Unibus card. I think it failed and was replace with a Facit punch with a serial interface. So, does anybody have a M7810 they want to get rid of? That is the PC11 interface. I don't know if that is a quad SPC board or a dual that needs a M105 address board and an M7821 interrupt board. I think it needs the extra boards. Any lead or information is welcome... -chuck