More memory board problems

All: I have to say that I'm nearly ready to throw this 8800b through a window. I purchased, yet again, another memory board in an effort to nail-down some stable memory for this system and reach 48k with the fewest boards possible. I've got the system booting BASIC with 16k, but I want more. This board is a 64k Central Data Systems DRAM card. I confirmed that it was strapped properly for an 8080-based system (sets refresh rate, etc.). This time I get problem I've never seen before. On RESET, the data LEDs show 0xff. If you toggle a value and DEPOSIT it, it will usually store but the LEDs will still show 0xff. If you EXAMINE the location, it will show the right value. Any ideas? I'm going back to swapping boards around again. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/