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Allows you to specify whether or not the user-defined device requires a JTAG ID code. Some devices may not require a JTAG ID code. Turning on Allow none will allow devices without a JTAG ID code to be identified as this user-defined device in a JTAG chain.
|  | When there are no JTAG IDs in the JTAG ID list, Allow None is dimmed to indicate it is not available. | 
| - PLDWorld - | 
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