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Altera_Forum
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14 years ago

How to use two USB blaster cable in the same computer

We want to debug different FPGAs/cplds which are in different JTAG chain at the same time using same computer. And we have several usb blaster cables, but one computer only recognizes one usb cable. ...
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Altera_Forum
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14 years ago

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What kinds usb cable do you used? Altera or local cable?

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Terasic USB-Blasters, and USB-Blasters embedded on development kits.

If the USB-Blaster circuit consists of an FTDI FT245BM USB-to-FIFO device, then it has an EEPROM that contains the configuration information. This is what FT_PROG reads, and then allows you to reprogram.

If you are using a Cypress FX2 clone, then you have to replace the fake EEPROM firmware with updated firmware with a new serial number.

Cheers,

Dave