You can download the contents required to create a crc.jam file and follow the instructions below to issue the CHANGE_EDREG instruction to simulate a CRC error in Stratix®, Stratix II, Arria® GX, and Cyclone® II and later-series devices.
Using the attached JAM file, modify line #9 to an arbitrary number. This is to change the CRC checksum value.
DRSCAN 32, ;
- This will overwrite the CRC checksum in the Storage Register through the CHANGE_EDREG instruction.
- The CRC_Error pin will then go high, signaling a CRC error.
You can use the command-line JAM player in the Quartus® II design software to execute the crc.jam file
The command would be :
quartus_jli -aconfig_io -cn crc.jam
where n after the -c = the cable index. To find out the cable index for the USB-Blaster™, execute :