Øyvind Harboe wrote:
> A target event wouldn't work terribly well here, as OpenOCD is founded
> on the false assumption that the JTAG chain never changes throughout OpenOCDs
> lifespan.
>   
Yes, but - I think - the JRC only allows insertions and deletions in a 
specific order. Not total and random re-arrangements.

If that is true, then as far as the TDI/TDO chain goes - perhaps we can 
view the problem like this:

Traditionally - a tap is INSERTED and thus put in bypass mode. And the 
TDI/TDO chain is +1 bit longer.

What I think OpenOCD needs is another "state" - ie: "Not Inserted", ie: 
TDI/TDO is +0 or +HUGE longer.

That would - I think - keep the "tap order" the same and simplify some 
things in OpenOCD.

-Duane.

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