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Altera_Forum's avatar
Altera_Forum
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12 years ago

Reserving unused pins

Does anyone know where the command line is to enter the "Reserve ALL Unused Pins" command? Also, the syntax of this command would be helpful. I do not have access to any of the tutorials through my f...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

I can never remember those commands, their format, or the value string. They are TCL commands, not shell commands. I hope you are aware of that. An example command is:

set_global_assignment -name RESERVE_ALL_UNUSED_PINS "AS INPUT TRI-STATED"

The best way to figure it out is to tweek the setting in Quartus GUI tool and extract the changes in .qsf file. The .qsf file basically is written using those TCL command. I always use TCL file generation menu in Quartus GUI to produce a file that I use to recreate project, which would contain the above command line.