Quartus II Settings File Reference Manual - Altera

6–30 Chapter 6: Fitter Assignments
BLOCK_RAM_AND_MLAB_EQUIVALENT_POWER_UP_CONDITIONS
BLOCK_RAM_AND_MLAB_EQUIVALENT_POWER_UP_CONDITIONS
Type
Controls whether RAMs implemented in MLAB cells must have equivalent power up
conditions as RAMs implemented in block RAM. Power up conditions occur when
the device is powered up or globally reset. Allowing non-equivalent power up
conditions provides the Fitter more flexibility in implementing RAMs using MLAB
cells. If you set this option to Auto, the Fitter may convert RAMs to MLAB cells even
if the RAMs do not have the equivalent power up conditions to a block RAM
implementation. The Fitter also sends a warning message notifying you of RAMs with
non-equivalent power up conditions. If you set this option to Don’t Care, the same
behavior as Auto applies, but the warning message is an information message
instead. If you set this option to Care, the Fitter does not convert RAMs to MLAB cells
unless the RAMs have the equivalent power up conditions to a block RAM
implementation. To allow the Fitter the most flexibility in deciding which RAMs are
implemented using MLAB cells, set this option to Auto or Don’t Care.
Enumeration
■ Auto
■ Care
■ Don’t Care
Device Support
This setting can be used in projects targeting the following device families:
■ Arria II GX
■ Arria II GZ
■ Arria V
■ Cyclone V
■ HardCopy III
■ HardCopy IV
■ Stratix III
■ Stratix IV
■ Stratix V
Notes
This assignment is included in the Fitter report.
Syntax
set_global_assignment -name
BLOCK_RAM_AND_MLAB_EQUIVALENT_POWER_UP_CONDITIONS
Quartus Settings File June 2012 Altera Corporation
Reference Manual