Re: Illegal instruction

["Noah Aklilu" <naklilu at ualberta dot ca>]

On 11 May 2000, at 20:14, Art Berggreen wrote:

> Noah Aklilu wrote:
> > 
> > On 11 May 2000, at 17:46, Art Berggreen wrote:
> > 
> > >
> > > Not sure why your monitor didn't disassemble it, but my books indicate
> > > that 0x4a89 is a TST.L A1 instruction.  This would be consistant with
> > > the instructions surrounding it.
> > >
> > > Art
> > 
> > This concerns me, because the microprocessor is the one that
> > would issue the illegal instruction exception not the monitor, so the
> > microprocessor itself doesn't recognize the instruction.
> 
> The 68306 datasheet indicates that it supports this instruction.  Are
> you sure that the CPU is taking an exception on these instructions?  The
> 68000 cores do have some alignment restrictions.
> 
> Art

Would you expand on that, I am not sure what you mean.    


Noah Aklilu
MSc Graduate Student
Dept of Electrical and Computer Engineering

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