Thread: JOE (Joe's Own Editor) compiled for Kindle
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Old 08-01-2012, 05:13 PM   #12
geekmaster
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Quote:
Originally Posted by knc1 View Post
That is not possible, the processor core will execute an: "Illegal instruction" trap.
Actually, your claim is not true for the ARM7TDMI (and others):
Quote:
ARM architecture reference manual, chapter 3.13, "Extending the instruction set". "UNPREDICTABLE" instructions are not caught by the undefined instruction exception.
Saying things are "not possible" is an absolute statement, and we should know by now that speaking in absolutes risks unwitting propagation of falsehoods.

Or... are you just saying that the HCF instruction gets trapped?
Last edited by geekmaster; 08-01-2012 at 05:17 PM.
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