Re: [Simulavr-devel] Whats to do on execution of "illegal instruction"

[Joerg Wunsch]

As Albrecht Frenzel wrote:

> Regarding ffff: It doesn't make sense to treat this code regularly 
> as SBRS r31, 7 - the code is officially undefined

See the thread I've been referencing.  In the early documentation 
(around 1997), bit 3 in the opcode had been marked X (don't care). 
Only later it was required to be 0.

Nevertheless, skipping over regions with FFFF after a reset is common
practice.
-- 
cheers, Joerg               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)