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Altera_Forum
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18 years ago

USB Blaster driver conflict with other FTDI kit

Hi, I am using a USB blaster (Terasic) and on the same system I need to use two Asix Presto programmers that use the same FTDI device and (apparently) drivers. The Presto devices load up and...
Altera_Forum's avatar
Altera_Forum
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9 years ago

Hello,

three years later, it seems to me that the "other FTDI devices" problem even gets worse with 64-Bit Windows. I was frequently using FTDI USB-to-RS232 bridges simultaneously with USB Blaster under 32-Bit WinXP. Now with 64-Bit Windows 7, it seems to be impossible at all.

Plugging-in the FTDI cable shifts the USB-x assignment, as mentioned by jenglee, same thing happened under WinXP. But once the FTDI virtual COM port is opened in an application. the USB Blaster no longer shows up in Quartus hardware selection, which is a new Window 7 or 64-Bit problem. There's no difference if I use a 64-Bit or 32-Bit Quartus version.

The issue might be brought up by changed FTDI drivers rather than Altera specific programming, but it's quite annoying.

Did anyone fix the problem?

Best regards,

Frank