Does anyone have a manual for an M7891 (128kx18 MOS memory)? What at the switch settings? or more specifically, what do the 9 pos & 4 pos switches do? (address, no doubt) I have one which shows a red light when I try to read/write from the console odt. I just want to make sure the switches aren't set incorrectly before I declare it broken. And are their any prints on the net? (I couldn't find any) thanks! -brad