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Instructions for Downloading the Design
The hardware bitstreams and software binary executable files can be downloaded to the
ML40x board using a download cable (Xilinx Parallel Cable IV or Platform Cable USB) or
the System ACE interface.
The downloaded design runs the hello_uart program. To see this program running,
connect a serial cable from a PC to the ML40x board. Use a terminal program like
HyperTerminal (shipped with Windows) and set the COM port settings to 9600 baud,
8 Data Bits, No Parity, 1 Stop Bit, No flow control. After the program is downloaded using
the instructions below, you should see Hello World! on your terminal. The board then
echoes the characters you type until you press the Escape key.
Download Using Parallel Cable IV or Platform Cable USB (iMPACT
Program)
After the design is implemented, a bitstream can be generated and downloaded into an
FPGA using a program like iMPACT, available with the Xilinx ISE tools. (A PC should be
used for this step.)
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ML40x EDK Processor Reference Design
UG082 (v5.0) June 30, 2006
Connect the download cable from a PC to the ML40x board and power on the board.
Click Device Configuration → Download Bitstream within XPS.
Note:
This loads a bitstream containing a bootloop program that effectively idles the processor
- not the software program that you have specified. You must continue with the remaining steps
in this section to load your program.
Click Debug → Launch XMD . . .
Note:
On the ML401 board, you must configure XMD to communicate with the opb_mdm
module using BSCAN number 1 instead of the default of BSCAN 0. Refer to the <EDK Project
Directory>/README file and Solution Record #20060 for more information. By default, the
ML401 xmd_microblaze_0.opt file is configured for Parallel Cable IV download and requires
editing for use with the Platform Cable USB.
Note:
For ML402, ML403, and ML405, the "set the XMD Debug Options...," message appears
the first time you run XMD. Click OK to enter debug option information such as the type of JTAG
cable you are using. Then click Save when finished. You may change debug options at any time
by selecting Debug→XMD Debug Options from the XPS GUI. Refer to the <EDK Project
Directory>/README file for more information.
This opens an XMD command shell.
Type into XMD:
dow microblaze_0/code/hello_uart.elf (MicroBlaze systems)
dow ppc405_0/code/hello_uart.elf (PPC405 systems)
This loads the code into memory.
Type run to start the program.
www.xilinx.com
Instructions for Downloading the Design
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