John Bevins wrote:
gfa@zumbi.com.ar wrote:do you have a serial cable plugged into it?Yes, the serial cable stays connected to a laptop which is not on very often.is attached to another computer that serial cable ?Yesdo usually reboots that other computer ?The laptop that is attached to it is not on that often. Most of the time when the Sun boxes crashes the laptop is off.
If your machine is like older ones: presumably you don't have an attached keyboard, so it's treating the serial port as the console. When it sees a break it treats it as the same as a Stop-A from the Sun keyboard, traditionally a pullup resistor from rxdata to pin 25 was used to prevent that.
-- Mark Morgan Lloyd markMLl .AT. telemetry.co .DOT. uk [Opinions above are the author's, not those of his employers or colleagues]