The BocaRam 50/60 starting address with a 1 meg mother board is 1408, which should be set with the IBM reference diskette. After installation of this board and you get a 164 memory size error do the following. 1. Boot up with a plain DOS diskette. 2. Using our 50/60 disk, run the program BR50MEMS. this program will attempt to reboot your system If your system hangs, power down the machine, remove our diskette and wait 15 seconds then power back up. This procedure should clear the 164 error.