Quartus II Settings File Reference Manual - Altera

4–118 Chapter 4: Analysis & Synthesis Assignments
MAX_NUMBER_OF_REGISTERS_FROM_UNINFERRED_RAMS
MAX_NUMBER_OF_REGISTERS_FROM_UNINFERRED_RAMS
Type
Allows you to specify the maximum number of registers that Analysis & Synthesis
can use for conversion of uninferred RAMs. You can use this option as a project-wide
option or on a specific partition by setting the assignment on the instance name of the
partition root.
The assignment on a partition overrides the global assignment (if any) for that
particular partition.
This option prevents synthesis from causing long compilations and running out of
memory when many registers are used for uninferred RAMs. Instead of continuing
the compilation, the Quartus II software issues an error and exits.
Integer
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
This assignment is included in the Analysis & Synthesis report.
Syntax
set_global_assignment -name MAX_NUMBER_OF_REGISTERS_FROM_UNINFERRED_RAMS
set_instance_assignment -name MAX_NUMBER_OF_REGISTERS_FROM_UNINFERRED_RAMS
-to -entity
Example
set_global_assignment -name max_number_of_registers_from_uninferred_rams
2048
Default Value
-1 (Unlimited)
Quartus Settings File June 2012 Altera Corporation
Reference Manual