Specifications
CHAPTER 5: PLACE & ROUTE
OPTIMIZING THE FIT
102 ■ INTRODUCTION TO QUARTUS II ALTERA CORPORATION
options to specify that the signal should be available throughout the device 
on a global routing path, specify that the Fitter should create parallel 
expander chains automatically, specify that the Fitter should automatically 
combine a register with a combinational function in the same logic cell, also 
known as “register packing,” or limit the length of carry chains, cascade 
chains, and parallel expander chains.
.
Using the Resource Optimization 
Advisor
The Resource Optimization Advisor offers recommendations for optimizing 
your design for resource usage in the following areas:
■ logic element usage
■ memory block usage
■ DSP block usage
■ I/O usage
■ routing resource usage
If you have an open project, you can view the Resource Optimization 
Advisor by choosing Resource Optimization Advisor (Tools menu). If the 
project has not been compiled yet, the Resource Optimization Advisor 
provides only general recommendations for optimizing resource usage. If 
the project has been compiled, however, the Resource Optimization Advisor 
can provide specific recommendations for the project, based on the project 
information and current settings. Figure 6 shows the Resource Optimization 
Advisor.
f
For Information About Refer To
Using Quartus II logic options to 
control place and route
“Logic Options,” “Creating, Editing & 
Deleting Assignments,” and “Specifying 
Settings for Default Logic Options” in 
Quartus II Help










