Use the copy command with the binary flag from the command line
copy /B "cahpter 1.smc"+"cahpter 2.smc"+"cahpter 3.smc"+"cahpter 4.smc" "All chapters.bin"
And check my sig for a reset bank switch
http://nintendoage.com/forum/mess...
Connect the highest address line to Q0 and the second highest to Q1
BUT I think the 12MB boards are really only good for Star Ocean as the last 4MB of the game are mapped as LoROM while the first 2 chunks are mapped as HiROM