< I buy the weirdest stuff sometimes. It's a hex keypad that obviously < belongs to a single-board computer, but not for a CPU I'm familiar with < CPU-specific labels are AC0, AC1, AC2, AC3, PC, NI, FLAG, and STK0. Wha < does this keypad belong to? (And does anybody need one?) My guess would be a DG NOVA/Microflame series. It's the only one I know of with four accumulators. Allison