Unit installation

MAX+PLUS II Getting Started
318 Altera Corporation
column number of the LAB. In Classic,
MAX 5000, and MAX 7000 devices, logic
cells have numbers of the format
LC<number>, where <number> may consist
of both digits and letters.
1 FLEX 10K, FLEX 8000, and
MAX 9000 devices have specialized
logic cells, called I/O cells, on the
periphery of the device.
logic cell Turbo Bit see Turbo Bit.
logic element see logic cell.
logic level The input and output logic
levels of nodes and groups are defined
with the following characters:
logic option An option that controls the
logic synthesis process on one or more
logic functions.
A variety of logic options are available.
Logic option assignments can be applied to
individual logic functions; a group of logic
option assignments, called a logic synthesis
style, can be applied to individual logic
functions. A default logic synthesis style is
also applied to the project as a whole. The
logic cell Turbo Bit logic option can also be
turned on or off on a device-by-device
basis.
Logic options can also be assigned as
parameters for a megafunction or
macrofunction.
1 1. Some logic options are not
available with standard
synthesis; all logic options are
available with multi-level
synthesis.
2. A logic option is ignored if it
does not apply to the current
device family.
logic synthesis style A combination of
logic synthesis option settings that are
saved under a single name.
A logic synthesis style can be individually
tailored for different device families, so
that the logic synthesis option settings vary
according to the architecture of the target
device family.
1 If the global project logic synthesis
style for your project is not fully
defined, i.e., if the style specified
with the Global Project Logic
Synthesis command (Assign menu)
uses a ÒdefaultÓ setting for any logic
option, the MAX+PLUS II Compiler
will use the non-ÓdefaultÓ setting for
that logic option from the
predefined, Altera-provided settings
Character: Logic Level:
0 Logic low (GND)
1 Logic high (VCC)
X Undefined/DonÕt Care (not
permitted for initialization)
Z High impedance (no input
to pin); e.g., used for the
ÒoutputÓ part of a
bidirectional pin when the
ÒinputÓ part of the pin is
driving in.
0 to 9, A to F Used for groups and
interpreted as binary,
decimal, hexadecimal, or
octal values according to
the current radix. The most
significant bit is first; the
least significant bit is last.
81_GSBOOK.fm5 Page 318 Tuesday, October 14, 1997 4:04 PM