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VGA IP Core for Xilinx

  • 640x480 Resolution
  • Connects to microblaze processor using FSL
  • Tested with 14.6 ISE Design Suite
  • Supports hard-coded 4 x 10-byte objects. Check vga_fsl.vhd to change it.

Using the VGA fsl ip core in the EDK project

  • Checkout the project and add it to project repository so that it shows up under peripherals tab in EDK
  • Hit Hardware -> Configure Coprocessor
  • vga_fsl should show up under Available Coprocessors. Hit it and hit << Add then hit Ok
  • Go to Ports tab and expand vga_fsl_0 choose hsync, vsync, and rgb, right click and hit Make External
  • Generate a 25 MHz clock from clock_generator, and hook it up to vga_clk port
  • If it doesn't automatically, connect FSL_Clk to the bus clock, and SYS_Rst to the bus reset under microblaze_to_vga_fsl_0
  • Add the external pins to the ucf file. Following is for Digilent Nexys3 board:
## VGA Pins for Digilent Nexys3 Board
NET vga_fsl_0_rgb_pin<7> LOC = "N7"  |  IOSTANDARD = "LVCMOS33"; # RED 2
NET vga_fsl_0_rgb_pin<6> LOC = "V7"  |  IOSTANDARD = "LVCMOS33"; # RED 1
NET vga_fsl_0_rgb_pin<5> LOC = "U7"  |  IOSTANDARD = "LVCMOS33"; # RED 0
NET vga_fsl_0_rgb_pin<4> LOC = "V6"  |  IOSTANDARD = "LVCMOS33"; # GREEN 2
NET vga_fsl_0_rgb_pin<3> LOC = "T6"  |  IOSTANDARD = "LVCMOS33"; # GREEN 1
NET vga_fsl_0_rgb_pin<2> LOC = "P8"  |  IOSTANDARD = "LVCMOS33"; # GREEN 0
NET vga_fsl_0_rgb_pin<1> LOC = "T7"  |  IOSTANDARD = "LVCMOS33"; # BLUE 1
NET vga_fsl_0_rgb_pin<0> LOC = "R7"  |  IOSTANDARD = "LVCMOS33"; # BLUE 0
NET vga_fsl_0_hsync_pin  LOC = "N6"  |  IOSTANDARD = "LVCMOS33"; # HSYNC
NET vga_fsl_0_vsync_pin  LOC = "P7"  |  IOSTANDARD = "LVCMOS33"; # VSYNC
  • Generate bitstream and you should see the stuff in vga_buffer.vhd on your monitor

Examples

  • Check out examples/gamedemo.c to control the objects with buttons from SDK
  • Check out examples/system.mhs to see an example design
  • Download examples/nexys3_vga_fsl_demo.bit to your Nexys3 board for the demo that uses bottons to move an object on the monitor connected through VGA