> Ok, the mentioned DIMMs just arrived. Nothing happens when I start
> the machine. PowerLED will stay on for a while. Thats it.

I remember that when changing RAM on the Pegasos, it was necessary to first power on the board without any RAM installed for 10 seconds or so and power off again, so that when the board is then powered on with the new RAM installed, the SmartFirmware will adapt to its timing values.