Can't say I'm an jtag expert, but have just started researching ways to program an fpga (Actel Igloo) from my Blackfin (BF-524).
Would it be possible to use the Jtag port, TDO etc to use the blackfin itself as a programmer for the fpga!?
Basically I don't have any I/O's left so if there is a trick (which I doubt), I would very much like to use the same jtag port but acting as a programmer.
For instance, the new ADZS-ICE-100B. How does that one do it's thing? Is there any schematics/source available?