Hello, I'm at a loss for what will take to get either of the two boards into DL mode. The board has nothing plugged into it; the BATT and PWR LEDs flash on and then PWR remains on so I can not confirm the synptoms of the ds1233(U12) voltage monitor (...) (28 years ago, 19-May-97, to lugnet.robotics.handyboard)
(...) Are you holding down the STOP button? With the board powered on, read the voltage at pin 3 of the 6811. When pressing the STOP button, pin 3 should read between zero volts and 0.6v. Releasing the STOP button, you should get 5v. If you get 5v (...) (28 years ago, 19-May-97, to lugnet.robotics.handyboard)