To switch from cJTAG to old JTAG mode on TI's CC2538 I need to send specific 
sequence over the TMS line. that sequence requires some irscans, drscans and 
pathmoves to be sent blindly to the device.

This needs to be done before scan is complete as otherwise scan will never 
complete, so i wonder if there is a way to do irscan blindly.

I guess right place would be post-reset handler but when i try to do irsscan 
there irlength is not properly set.

Any idea how to do that?

Thanks,

Damjan
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