I created a .jam file based on the AN539 document and performed an error injection test. Please tell me how to inject an error when there are multiple devices in the JTAG chain.

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A .jam file is created with reference to the AN539 document and an error injection test is performed. How do I inject errors when there are multiple devices in the JTAG chain?

Category: Programming/Configuration
Tools: Quartus® Prime
Device: Arria® V

If there are multiple devices in the JTAG chain, describe how many chains of IR and DR registers there are before and after the target device.
Normally, the IR register is 10bit and the DR register is 1bit, so if you insert an error in the second device, add the following after PROCEDURE EXECUTE in the .jam file.

PREIR 0;
POSTIR 10;
PREDR 0;
POST DR 1;

Reference information
https://www.altera.com/en_US/pdfs/literature/an/an539.pdf

https://www.altera.com/support/support-resources/knowledge-base/solutions/rd11222005_659.html

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