Have had this for years but never found a manual. Is it very different from the Concorde-V. Has 30pin simm sockets where the -V does not. It works well with the 1Mb dip ram but want to add the simms and a mathco but cannot decipher the jumper and switch pack as they mostly lead to 74244 and 74245's before rerouting to the NEC DF12013 chip.
Sorry the full board pic is not better, bad light makes bad pictures.