All: After a few weeks of tinkering with my 8800b I think I've finally got it working satisfactorily (except for some bad RAM which was the subject of a prior email). I've got an EPROM programmed with the Turnkey Monitor, EPROM programming software for the SSM P1B board, and the driver software for the SSM V1B video board. Except for the RAM, everything works. The only thing I have to track down is why the video is displaying only black-on-white. Otherwise, I have to replace two switches on the front panel with flat-blade ones. Now I have to improve on the monitor so I can load something useful into memory :-) Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/