Can anyone identify the equipment this board came from, or the company going from the style of part number? It's a baud rate generator, or presumably is, given the "TTY" on the solder side. ~ 10.7 MHz clock, 12-14 stage divider, late 1970's. http://www3.telus.net/~bhilpert/tmp/brg/ Seemingly odd choice of clock frequency for a baud rate generator, results in some error at the higher standard rates.