battered board back to its old self again. However, looking through the doco I noticed that the 8800B requires a display/control and interface boards. A question for those of you that own a MITS8800 - does it need those boards for a turnkey system? Can I plug the CPU board into the backplane and run it without the d/c and i/f cards, assuming I set up the ROM and RAM cards for the system? If not, (since I do not have the d/c and i/f cards) I'll have to try and build them from the cct diagrams I have obtained. This is do-able (but a lot of work) if I can get my hands on some blank S100 w/wrap boards, but I noticed there's a 1702 EPROM chip and I'd need to get the memory map for this chip to burn my own. would need a repaired 8800 CPU card for trade or anything similar? Hi It should work on a turnkey. Almost everything goes through the S100 bus. Only the direct connect of the data bus goes directly between the panel and the CPU board. I don't think that is needed. You will have to have code residing at address 0000. This is not common. Most expected a working front panel that could load a boot address. Some ROM boards have a way to be at 0000 after reset and then switch to someplace else once things are booted. Don't give up on it. When there is a will, there will be a way. Dwight