link: http://www.ebay.com/itm/272879570374 This board had some trace damage in the address jumper area, which was repaired by installing machine pin sockets in all of the address jumper positions. One position had the through-hole completely pulled out, with no pads on either side -- the trace to this pin was repaired, and the pin secured in place with two-part epoxy. After repair to the address jumper area, it was found that the DM8131 address decoder was bad, this was replaced with a NOS part. As shown in the listing, this board is now 100% functional and tests out according to the Processor Tech manual. It was tested in my IMSAI 8080 with an Intel 8080 CPU board. Do note that this is an older design and requires I/O addresses to be mirrored (high byte should be the same as low byte). This is standard for 8080/8085 CPU boards, but other CPU boards (e.g. Z80) may not support it, or may require a jumper change. Thanks, Jonathan