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document updated 13 years ago, on Jan 30, 2011

The serial break is a non-standard signal. Since it's non-standard, there are various problems with it: 1) some hardware is incapable of sending it, 2) sometimes unintended breaks occur.

avoiding unintended BREAKs [1] [2] [3]
- OMG, somebody is really persistent in investigating this
getting modern hardware to send a BREAK when desired
- [1]
- emulator=tip [1] [2]
- lower the baud rate, and send a chr(0) (see the "IT WORKS" message at the end for their final solution)
deeper hacks at avoiding unintended BREAKs
- VERY detailed information about what BREAK entails
- resistor between pins 3 and 25 [1]
- random (and not very reliable) hardware hacks [1]
technical note: in Linux, the ioctl's used for break are: TCSBRK, TCSBRKP, TIOCSBRK, and TIOCCBRK