Connecting UP3 (byteblaster II) to computer via USB to parallel cable

Ricardo,

Typically, USB to Parllel port adapters do NOT work for FPGA download cables.

I am looking at the schematic for the UP3 on the WEB right now.

The parallel port is NOT for programming the device.

http://users.ece.gatech.edu/~hamblen/up3/up3_1c6_rev2_schematic.pdf Page 19

In otder to program the device you should have an Altera programming cable (USB Blaster) that will connect to your laptop USB port.

JP12 is used when you wish to directly download your design right into the FPGA (using the .sof file).

JP11 is used when you are happy with your design, and have told the tools to convert the .sof file to a .pof file via a check box selection) and wish to have it perminently stored on the board in the EPCS1 PROM.

You use the same cable, but this time, the .pof file is used to program the EPCS1 PROM with your code, and the EPCS1 will then load the design file into the FPGA every time the board is powered up.

I hope this helps your effort.

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