Visible to Intel only — GUID: QSF-SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL
Ixiasoft
Visible to Intel only — GUID: QSF-SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL
Ixiasoft
SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL
Allows the Compiler to find a group of shift registers of the same length that can be replaced with the altshift_taps megafunction. The shift registers must all use the same aclr signals, must not have any other secondary signals, and must have equally spaced taps that are at least three registers apart. To use this option, you must turn on the Auto Shift Register Replacement logic option.
Type
Boolean
Device Support
- This setting can be used in projects targeting any Intel FPGA device family.
Notes
This assignment is included in the Analysis & Synthesis report.
This assignment supports synthesis wildcards.
Syntax
set_global_assignment -name SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL <value> set_global_assignment -name SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL -entity <entity name> <value> set_instance_assignment -name SHIFT_REGISTER_RECOGNITION_ACLR_SIGNAL -to <to> -entity <entity name> <value>
Default Value
On
Example
set_global_assignment -name shift_register_recognition_aclr_signal off set_instance_assignment -name shift_register_recognition_aclr_signal off -to foo