I have an unidentified Q-Bus board that I'm hoping someone will recognize. it's a quad-height (i.e. full-size) board. On the component side is says "RELIABILITY ASSOCIATES" and (c) 1987 and "TIME SLOT CONTROLLER". It has two 40-pin headers and a 20-pin header and two pushbutton switches. Chipwise, it's got a 68000RC10, a couple of 68450s, three MK68564s, and a 74S409N, all socketed, and a host of PALs and MSI/SSI chips. Anybody know what this is? Also does anyone have data sheets for 74S409? Gordon Gordon Zaft zaft(a)azstarnet.com