[PD-dev] [once] default closed...

[Chris McCormick]

On Fri, Sep 29, 2006 at 12:28:57AM -0400, Mathieu Bouchard wrote:
> On Thu, 28 Sep 2006, Hans-Christoph Steiner wrote:
> 
> >Obviously usefulness is essential.
> 
> Not even: the 6809 CPU has those two curious opcodes in it.
> 
> BRA, or branch always, means if(1) goto ...;
> BRN, or branch never,  means if(0) goto ...;
> 
> this is among 14 other types of branches like "branch if last result 
> overflowed" and "branch if last result was negative" and other serious 
> stuff.
> 
> Note that 6809 already has another goto statement, called JMP.

Weird. Does the BRN have the same side effects, number of cycles etc. as
a NOP? Likewise for BRA vs JMP?

Chris.

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