I've taken photographs of a couple of interesting looking but unknown boards I've been setting aside and am curious if anyone can identify them. The following boards are from 1975 and are all labeled "MDS-100x", where 'x' is between 1 and 8. My Google searching was unable to find anything that looked relevant. <http://www.applefritter.com/temp/boards/mds/1.jpg> has a couple of 6821's <http://www.applefritter.com/temp/boards/mds/2.jpg> <http://www.applefritter.com/temp/boards/mds/3.jpg> is just about all TTL The second two of these cards have a connector that looks like Nubus but is missing the middle row of pins. Are these for a laser printer? <http://www.applefritter.com/temp/boards/seminubus/1.jpg> <http://www.applefritter.com/temp/boards/seminubus/2.jpg> has a 68000 processor and RAM. <http://www.applefritter.com/temp/boards/seminubus/3.jpg> is labeled Ricoh Engine Driver Another one that looked interesting. I have no idea what this is from. <http://www.applefritter.com/temp/boards/1.jpg> Thanks. Tom Applefritter www.applefritter.com