Sega Megadrive/Genesis mods/repairs (13).😉Īlso Did you see my Pull Request on GITHUB? Having that merged would make assembly tutorials a bit easier. I’ve gathered quite a lot of different straces for this from jtagd and will gladly open up a bug/issue with the Quartus team if someone might point me to the right direction. One can cause them to hang or work without having the OSSC connected, and then reattach different OSSCs after the initialization works.

The devices seem to hang on initialization with the JTAG daemon. Important here: The OSSCs in questions don’t play a role in this situation. As long as the device stays initialized, it can be used to push the bitstream. Once this occurs, one can actually attach different JTAG chains to it. Unable to read device chain - JTAG chain jtagconfig Steadily plugging the device in and back out will eventually get a recognition off of the jtagconfig This happens with the quartus software or when using jtagconfig: ioctl(6, USBDEVFS_REAPURBNDELAY, 0x7fff1cc3cad8) = -1 EAGAIN (Resource temporarily unavailable) Often, the jtagd gets stuck in a loop which eventually segfaults. Starting jtagd as root with an strace -f allowed me to trace through the behavior: Terasic USB Blaster with Altera 5M160ZE64C5N I can get a connection to the JTAG chain occasionally, with both of these devices: The (cheaper but newer) one from Terasic should work too, since both are recommended by Intel for the Cyclone FPGA family:īut i’ve read about some very rare compatibility issues inside Quartus Prime with those too… even though the Terasic one is an official product with an ALTERA sanctioned design. So to be on the safe side you’ll have to buy an official Intel/ALTERA one – like this: In the end it’s kind of a ‘hit and miss’ with those clones. Sadly they are indistinguishable from the outside, since they are using the same casing.

And there are some with a PIC18F14k50 – those won’t crash. There are some with an STM32F101 – those will crash. Someone informed me, that it’s related to the microcontroller inside the clones. The last version working for me with such a USB blaster clone is v13.1. I can confirm the BSOD issue with (some of) the cheap Chinese USB Blaster clones and newer Quartus Prime versions.

Quartus usb blaster driver windows 10