Article ID: 000078924 Content Type: Troubleshooting Last Reviewed: 02/26/2013

Why can't I pack two independent 18x18 multipliers into single ArriaV DSP block?

Environment

    Quartus® II Subscription Edition
BUILT IN - ARTICLE INTRO SECOND COMPONENT

Critical Issue

Description Under certain conditions, the Quartus® II software may not be able pack two independent 18x18 multipliers into the same Arria® V DSP Block.  
Resolution

To work around this issue, add follow line into your quartus.ini file under the project directory:

fsac_ff_enable_mac_scan_chain_packing=OFF

If you do not already have a quartus.ini file, use the text editor and create this file in your project directory, then add the above line. 

This is scheduled to be fixed in a future release of the Quartus II software.

Related Products

This article applies to 9 products

Arria® V GT FPGA
Arria® V GX FPGA
Arria® V GZ FPGA
Arria® V ST SoC FPGA
Arria® V SX SoC FPGA
Stratix® V E FPGA
Stratix® V GS FPGA
Stratix® V GT FPGA
Stratix® V GX FPGA

1

Need more help?

Contact support

Disclaimer

1

All postings and use of the content on this site are subject to Intel.com Terms of Use.