Hello, all: I just got a CompuPro RAM20 memory board with no manual. I'm looking for the DIP switch settings specifically, but a copy of the manual would be very helpful. It's missing two chips...a 74LS74 at U6 and a 25LS2521 at U10. The memory array is 8 columns of 8 chips, type MM2147J. I'm thinking that these are 2kx1 chips, resulting in a 16k board. Any help appreciated. Thanks. Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/