Quartus II Settings File Reference Manual - Altera

About–4 Appendix :
Assignment Value Syntax
string
An assignment with type string requires an argument that is a string. If the string
contains any illegal characters, you must enclose the entire string argument in double
quotation marks.
filename
An assignment with type filename requires a value that is the name of a file. You can
specify directory separators with the forward slash character (/) or back slash
characters (\). For example, the following values are legal:
■ simulation/output.vho
■ “c:\design\top.edf”
All filename assignment values are case sensitive..
time
An assignment with type time requires a value that is a time. A time value consists of
a numeric value and text representing units of duration. The numeric value can
include a decimal point, and the numeric value and units of duration can be separated
by a single space. For example, the following values are legal:
■ “1 ps”
■ “-2ns”
■ 10.0µs
Table About–1 shows abbreviations for units of time.
Table About–1. Abbreviations for Units of Time
Time Unit Description
s second(s)
ms millisecond(s)
µs microsecond(s)
ns nanosecond(s)
ps picosecond(s)
fs femtosecond(s)
Hz hertz
kHz kilohertz
MHz megahertz
GHz gigahertz
enum
An assignment with type enum requires an value from the enumerated list included
with the assignment definition. Only values in the list are legal.
location
An assignment with type location requires a value that defines a physical resource
location in a device. For example, the following values are legal in certain devices:
Quartus Settings File June 2012 Altera Corporation
Reference Manual