18.104.22.168. Rules to Combine Groups
For vertical migration with the ×36 emulation implementation, check if migration is possible and enable device migration in the Quartus Prime software.
Each side of the device in these packages has four remaining ×8/×9 groups. You can combine four of the remaining for the write side (only) if you want to keep the ×36 QDR II and QDR II+ SRAM interface on one side of the device, by changing the Memory Interface Data Group default assignment, from the default 18 to 9.
For more information about rules to combine groups for your target device, refer to the External Memory Interfaces chapter in the respective device handbooks.
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