Altera Quartus II Settings File - Manual (Page 644)

MERCURY_DEVICE_IO_STANDARD
Specifies the default I/O standard to be used for pins on the target device.
Type
String
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
The value of this assignment is case sensitive.
Syntax
set_global_assignment -name MERCURY_DEVICE_IO_STANDARD <value>
644 MERCURY_DEVICE_IO_STANDARD
MNL-Q21005
2015.05.04
Altera Corporation Quartus Settings File Reference Manual
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