Altera Quartus II Scripting - Manual (Page 432)

3–302 Chapter 3: Tcl Packages & Commands
sdc
Quartus II Scripting Reference Manual © July 2013 Altera Corporation
remove_input_delay
Usage
remove_input_delay <targets>
Options
<targets>: Collection or list of input ports
Description
Removes input delay from a port. For each input port specified, removes all input delays for that port. This
means that rise, fall, max, and min delays for each clock and reference pin on the input port are all
removed.
The value of the targets is either a collection or a Tcl list of wildcards used to create a collection of the
appropriate type. The values used must follow standard Tcl or TimeQuest-extension substitution rules.
See help for the use_timequest_style_escaping command for details.
Example
# Simple input delay with the same value for min/max and rise/fall
set_input_delay -clock clk 1.5 [get_ports {in1 in2}]
set_input_delay -clock clk2 1.5 [get_ports {in1 in2}]
set_input_delay -clock clk 1.6 [get_ports {in3 in4}]
# Remove input delay on ports in1 and in4,
# for all flags and reference ports and flags
remove_input_delay [get_ports {in1 in4}]