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The Synthesis Fitting Settings section lists all the user-entered or default logic options for the project that you can also set in the Default Logic Option Settings page of the Settings dialog box (Assignments menu), or the Assignment Organizer dialog box (Assignments menu). The Synthesis Fitting Settings section is located in the Project Settings File (.psf).
The Synthesis Fitting Settings section keyword is SYNTHESIS_FITTING_SETTINGS.
The Synthesis Fitting Settings section contains statements that follow these Usage Code definitions.
The following table shows the Synthesis Fitting Settings section keywords (which are underscore separated), descriptions, legal settings, and usage codes:
| Keyword | Settings | Code |
|---|---|---|
ALLOW_POWER_UP_DONT_CARE |
On | Off (Default=On) | A |
ALLOW_XOR_GATE_USAGE |
On | Off (Default=On) | A |
APEX™20K_OPTIMIZATION_TECHNIQUE |
Speed | Area (Default=Area) | A |
APEX20K_TECHNOLOGY_MAPPER |
Lut | Product Term | Rom | Auto (Default=Lut) | A |
AUTO_CARRY_CHAINS |
On | Off (Default=On) | A |
AUTO_CASCADE_CHAINS |
On | Off (Default=On) | A |
AUTO_DELAY_CHAINS |
On | Off (Default=On) | A |
AUTO_DSP_RECOGNITION |
On | Off (Default=On) | A |
AUTO_GLOBAL_CLOCK |
On | Off (Default=On) | A |
AUTO_GLOBAL_MEMORY_CONTROLS |
On | Off (Default=Off) | A |
AUTO_GLOBAL_OE |
On | Off (Default=On) | A |
AUTO_GLOBAL_REGISTER_CONTROLS |
On | Off (Default=On) | A |
AUTO_IMPLEMENT_IN_ROM |
On | Off (Default=Off) | A |
AUTO_LCELL_INSERTION |
On | Off (Default=On) | A |
AUTO_MERGE_PLLS |
On | Off (Default=On) | A |
AUTO_OPEN_DRAIN_PINS |
On | Off (Default=On) | A |
AUTO_PACKED_REG_CYCLONE |
Off | Normal | Minimize Area | Minimize Area with Chains (Default = Normal) | A |
AUTO_PACKED_REGISTERS |
Off | Normal | Minimize Area (Default=Off) | A |
AUTO_PACKED_REGISTERS_STRATIX |
Off | Normal | Minimize Area | Minimize Area with Chains (Default=Normal) | A |
AUTO_PARALLEL_EXPANDERS |
On | Off (Default=On) | A |
AUTO_RAM_RECOGNITION |
On | Off (Default=On) | A |
AUTO_SHIFT_REGISTER_RECOGNITION |
On | Off (Default=On) | A |
AUTO_TURBO_BIT |
On | Off | Auto (Default=On) | A |
CARRY_CHAIN_LENGTH |
<integer> (Default=48) | A |
CARRY_OUT_PINS_LCELL_INSERT |
On | Off (Default = On) | A |
CASCADE_CHAIN_LENGTH |
<integer> (Default=2) | A |
DSP_BLOCK_BALANCING |
Auto | Off | DSP blocks | Logic Elements | Simple Multiplier | Width 18-bit Multipliers | Simple 18-bit Multipliers (Default=Auto) | A |
ENABLE_BUS_HOLD_CIRCUITRY |
On | Off (Default=Off) | A |
FLEX®6K_CARRY_CHAIN_LENGTH |
<integer> (Default=32) | A |
FLEX6K_OPTIMIZATION_TECHNIQUE |
Speed | Area (Default=Area) | A |
FLEX6K_TECHNOLOGY_MAPPER |
Lut (Default=Lut) | A |
FLEX10K_CARRY_CHAIN_LENGTH |
<integer> (Default=32) | A |
FLEX10K_OPTIMIZATION_TECHNIQUE |
Speed | Area (Default=Area) | A |
FLEX10K_TECHNOLOGY_MAPPER |
Lut | ROM | Auto (Default=Lut) | A |
IGNORE_CARRY_BUFFERS |
On | Off (Default=Off) | A |
IGNORE_CASCADE_BUFFERS |
On | Off (Default=Off) | A |
IGNORE_GLOBAL_BUFFERS |
On | Off (Default=Off) | A |
IGNORE_LCELL_BUFFERS |
On | Off (Default=Off) | A |
IGNORE_ROW_GLOBAL_BUFFERS |
On | Off (Default=Off) | A |
IGNORE_SOFT_BUFFERS |
On | Off (Default=On) | A |
LIMIT_AHDL_INTEGERS_TO_32_BITS |
On | Off (Default=Off) | A |
LL_IMPORT_FILE |
<file name> | A |
MAX7000_IGNORE_SOFT_BUFFERS |
On | Off (Default=Off) | A |
MAX7000_OPTIMIZATION_TECHNIQUE |
Speed | Area (Default=Speed) | A |
MAX7000_PARALLEL_EXPANDER_CHAIN_LENGTH |
<integer> (Default=4) | A |
MERCURY_CARRY_CHAIN_LENGTH |
<integer> (Default=48) | A |
MERCURY_OPTIMIZATION_TECHNIQUE |
Speed | Area (Default=Area) | A |
MERCURY_TECHNOLOGY_MAPPER |
Lut | ROM (Default=Lut) | A |
NORMAL_LCELL_INSERT |
On | Off (Default = On) | A |
NOT_GATE_PUSH_BACK |
On | Off (Default=On) | A |
PARALLEL_EXPANDER_CHAIN_LENGTH |
<integer> (Default=16) | A |
PCI_IO |
On | Off (Default=Off) | A |
REMOVE_DUPLICATE_LOGIC |
On | Off (Default=On) | A |
REMOVE_DUPLICATE_REGISTERS |
On | Off (Default=On) | A |
REMOVE_REDUNDANT_LOGIC_CELLS |
On | Off (Default=Off) | A |
SLOW_SLEW_RATE |
On | Off (Default=Off) | A |
STATE_MACHINE_PROCESSING |
One-Hot | Minimal Bits | Auto | User-Encoded (Default=Auto) | A |
STRATIX_CARRY_CHAIN_LENGTH |
<integer> (Default=70) | A |
STRATIX_OPTIMIZATION_TECHNIQUE |
Speed | Area (Default=Area) | A |
TURBO_BIT |
On | Off (Default=On) | A |
WEAK_PULL_UP_RESISTOR |
On | Off (Default=Off) | A |
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