excamera, what I'm hacking on, daily.

jamesb@excamera.com

Using Spartan II's JTAG pins as general purpose I/O
According to these notes, it's possible to use the JTAG pins as general purpose I/O. This would be nice - I wouldn't have to put a second connector on the board for the host interface.

OK, I get this error message:

ERROR:NgdBuild:423 - The tdi symbol "u1" is not supported in the spartan2
   architecture. Of the currently installed architectures, the following support
   tdi symbols: SPARTAN, SPARTANXL, XC4000E, XC4000EX, XC4000L, XC4000XL,
   XC4000XLA, XC4000XV, XC5200.

It's clear that this isn't supported.

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