Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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Jtag Server USB-Blaster detection

Simon-jb
Beginner
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Hi,

I've encountered a problem with the last windows update (22000.795).

Using the latest programmer (21.1.1)  my jtag server won't detect the USB-Blaster if, and only if, the virtual COM port from a serial-usb (FT422) converter is open.  The problem is, this port needs to stay open for other operations running on the system.

 

Is this a known problem? I could not find any solutions other than reverting the windows update, which our clients can't do.  Is there another way for the jtagserver to discover the usb-blaster or do I need to close the COM port?

 

Thanks for the help

 

Complete setup :

Windows pro 11 22000.795

Quartus programmer 21.1

FTDI VCP driver 2.12.36.4

FPGA Devboard DE0-Nano Cyclone IV

Altera USB-Blaster 2.12.0.0

 

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