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title If you write the character "a" the RAM test should start.

Use the demo project without the XMD UART

To use the demo project without the XMD UART, you need to use "RS232" instead of "debug_module" as standard in/out port. Otherwise the application running on the Microblaze processor freezes if you disconnect the XMD. To accomplish that you need to set up the Microblaze "Software Platform Settings".

• In the dialog window select "OS and libraries" in the left window and pick "RS232" as a stdout and stdin interface.
• Then rebuild the software and download again the project to the FPGA.

The UART is then redirected to external pins, which are defined in the data/system.ucf file.

The following snippet shows the case of the TE0300 series modules:

Module RS232 constraints*
Net fpga_0_RS232_RX_pin LOC=B13;
Net fpga_0_RS232_TX_pin LOC=B14;
Please refer to the table below  for other module series relevant to this application note.

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title Sample UART to USB virtual COM port converter.
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title Sample UART to USB virtual COM port converter: signal detail for TE0320 and TE0323.
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