Unit installation
MAX+PLUS II Getting Started
304 Altera Corporation
D
database A flattened representation of all 
design files in a MAX+PLUS II project 
hierarchy. The database is used internally 
by Compiler modules during compilation.
decimal The base 10 number system 
(radix). Decimal digits are 0 through 9.
In AHDL,VHDL, and Verilog HDL no 
special notation is needed to indicate 
decimal digits.
default Simulator Channel File (.scf) A 
Simulator Channel File (.scf) that can 
contain all nodes and groups that are in the 
Simulator Netlist File (.snf) for a project. It 
is created automatically with the Enter 
Nodes from SNF command (Node menu) 
in the Waveform Editor.
default timing tagging The Timing 
Analyzer provides the following default 
node tagging for timing analysis:
delimiter A text string, character, or 
keyword used to define the beginning or 
the end of a statement or construct in a text 
file.
For example, [ and ] are delimiters of 
AHDL group ranges and % is a comment 
delimiter in many MAX+PLUS II text files.
design file A file that contains logic for a 
MAX+PLUS II project and is compiled by 
the Compiler. The following files are 
design files:
■ Altera Design File (.adf)
■ EDIF Input File (.edf) *
■ Graphic Design File (.gdf) *
■ OrCAD Schematic File (.sch) *
■ State Machine File (.smf)
■ Text Design File (.tdf) *
■ Verilog Design File (.v)
■ VHDL Design File (.vhd) *
■ Waveform Design File (.wdf)
■ Xilinx Netlist Format File (.xnf)
An asterisk (*) indicates the design files 
that can exist as top-level files in 
hierarchical projects. Other design files 
must be the only design file in a project or 
must exist at the bottom level of a 
hierarchical project.
destination node A node that is tagged 
(designated) as the destination of a signal 
for the purpose of timing analysis. A 
destination node is tagged with the Timing 
Analysis Destination command (Utilities 
menu), and can be any node that is the 
input to a logic function or a pin. 
device A device refers to an Altera 
programmable logic device, including 
Classic, MAX 5000, MAX 7000, MAX 9000, 
Analysis Mode: Default Tagging:
Delay Matrix All input pins are 
sources; all output pins 
are destinations.
Setup/Hold 
Matrix
All input pins are 
sources; all data and 
Clock inputs to 
registers, Latch Enable 
inputs to latches, and 
data, address, and Write 
Enable inputs to 
asynchronous RAM are 
destinations.
Registered 
Performance
All Q outputs of 
registers are sources; all 
data and Clock Enable 
inputs to registers are 
destinations.
81_GSBOOK.fm5 Page 304 Tuesday, October 14, 1997 4:04 PM










