About This User Guide
This document uses the typographic conventions shown below.
Typographic
Conventions
Visual Cue
Meaning
Bold Type with Initial
Capital Letters
Command names, dialog box titles, checkbox options, and dialog box options are
shown in bold, initial capital letters. Example: Save As dialog box.
bold type
External timing parameters, directory names, project names, disk drive names,
filenames, filename extensions, and software utility names are shown in bold
type. Examples: fMAX, \qdesigns directory, d: drive, chiptrip.gdf file.
Italic Type with Initial Capital Document titles are shown in italic type with initial capital letters. Example: AN 75:
Letters
High-Speed Board Design.
Italic type
Internal timing parameters and variables are shown in italic type.
Examples: tPIA, n + 1.
Variable names are enclosed in angle brackets (< >) and shown in italic type.
Example: <file name>, <project name>.pof file.
Initial Capital Letters
“Subheading Title”
Courier type
Keyboard keys and menu names are shown with initial capital letters. Examples:
Delete key, the Options menu.
References to sections within a document and titles of on-line help topics are
shown in quotation marks. Example: “Typographic Conventions.”
Signal and port names are shown in lowercase Courier type. Examples: data1,
tdi, input.Active-low signals are denoted by suffix n, for example, resetn.
Anything that must be typed exactly as it appears is shown in Courier type. For
example: c:\qdesigns\tutorial\chiptrip.gdf. Also, sections of an
actual file, such as a Report File, references to parts of files (for example, the
VHDL keyword BEGIN), as well as logic function names (for example, TRI) are
shown in Courier.
1., 2., 3., and
a., b., c., etc.
Numbered steps are used in a list of items when the sequence of the items is
important, such as the steps listed in a procedure.
■
●
•
Bullets are used in a list of items when the sequence of the items is not important.
The checkmark indicates a procedure that consists of one step only.
The hand points to information that requires special attention.
v
1
c
A caution calls attention to a condition or possible situation that can damage or
destroy the product or the user’s work.
A warning calls attention to a condition or possible situation that can cause injury
to the user.
w
r
The angled arrow indicates you should press the Enter key.
The feet direct you to more information on a particular topic.
f
Altera Corporation
MegaCore Version 7.2
vii
8B10B Encoder/Decoder MegaCore Function User Guide
ALTERA [ ALTERA CORPORATION ]
