"H J van Rooyen" <[EMAIL PROTECTED]> writes: > So on a processor that does not have protected instructions - if an > idiot writes something to the following effect : > > *instructions to disable interrupts* > > followed by : > > *instructions that go into an infinite loop AND that make no OS calls* > > the whole bang shoot stops dead - Reset your machine...
A common recovery mechanism in embedded systems is a watchdog timer, which is a hardware device that must be poked by the software every so often (e.g. by writing to some register). If too long an interval goes by without a poke, the WDT hard-resets the cpu. Normally the software would poke the WDT from its normal periodic timing routine. A loop like you describe would stop the timing routine from running, eventually resulting in a reset. -- http://mail.python.org/mailman/listinfo/python-list
