link: http://www.ebay.com/itm/272880791277 Processor Tech's early 2K ROM board, can be used with 1702/5203 type ROMs, including the slower 1702 variants (up to 4 wait states can be added). This board arrived with two shorted tantalum capacitors, which have been replaced. I changed addressing and wait state jumpers from soldered wire to machine pin sockets to save on board wear and tear. Tested with a 1702A pattern ROM (not included) in my IMSAI 8080 -- works fine! Thanks, Jonathan