Jack Gassett

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About Jack Gassett

  • Rank
    Aspiring Inventor
  • Birthday 03/12/1974

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  • Website URL http://www.gadgetfactory.net

Profile Information

  • Gender Male
  • Location Westminster Colorado
  • Interests Snowboarding, electronics, Open Source Hardware, guitar.
  1. Wishbone_to_Registers lisence

    No, consider that code public domain code. Feel free to do whatever you like with it. Jack.
  2. VGA Wing (6 bit)

    Sparkfun must have made a mistake then... I didn't realize they were even still selling Papilio boards. I have a VGA wing here in front of me and R1, R2, R3 are 391 (390 ohm) and R4, R5, R6 are 821 (820 ohm). So if all six resistors on the board you have are the same value then they made a mistake when they manufactured the boards... We should get you a better board, are you in the United States? Jack.
  3. Why 32MHz XTAL?

    Sounds good, keep us posted about how it goes with a different oscillator. Jack.
  4. Can you read the part number from the transistor? If so then type it into digikey.com and go from there... Jack.
  5. Contradiction in description

    Yes, agreed. Jack.
  6. VGA Wing (6 bit)

    It looks like that schematic is for version 1.0 of the VGA wing. The 1.1 version should have 2 bits per color. Please look at the pinouts here: http://papilio.cc/index.php?n=Papilio.VGAWing Jack.
  7. Simple connections of the output Pin "D12" with clk

    Awesome! Glad that helped out. Jack.
  8. Why 32MHz XTAL?

    The clocking wizard usually does a pretty good job of getting you close to where you need to be. Please look at this tutorial to see how to use the clocking wizard: http://gadgetfactory.net/learn/2017/02/22/fpga-clocking-clocking-wizard-in-xilinx-ise/ 32Mhz was selected because I wanted something below 50Mhz that would be considered low frequency. Also, for the Spartan 3E it had to be over 10Mhz if I remember correctly. I found two reels of 32Mhz oscillators for $10 on eBay and since at the time I was manufacturing all of the Papilio boards on a pick and place in my basement the decision to go with 32Mhz was made easy. Jack.
  9. Contradiction in description

    It's not bootstrap, a bit file gets loaded to the FPGA that connects the SPI pins of the Flash chip to the MPSSE engine of the FT2232 chip. papilio-prog is a fork of xc3sprog application. xc3sprog supports changing the channel. Jack.
  10. Simple connections of the output Pin "D12" with clk

    You can also see more tutorials at: http://learn.gadgetfactory.net/ These may help: http://gadgetfactory.net/learn/2015/05/13/designlab-another-fpga-circuit-example-2/ http://gadgetfactory.net/learn/2015/05/03/designlab-make-a-simple-fpga-circuit-2/ http://gadgetfactory.net/learn/2017/02/22/fpga-clocking-clocking-wizard-in-xilinx-ise/
  11. Simple connections of the output Pin "D12" with clk

    If you try to connect the 96Mhz clock to an external pin you are not going to see anything on a LED attached to that pin, it is going to be too fast. You want to slow down the clock to something you can see. Please take a look under the symbols area for the Building_Blocks there are pre-made tools to help connect to a 32Mhz clock (which is the default clock for Papilio) and slow the clock down. You can do something like this:
  12. Contradiction in description

    JTAG only works on Channel A of the FT2232 that is used on the Papilio Pro because MPSSE is only available on Channel A. The newer FT2232H has MPSSE on both channels so it should work to switch them around. Just double check the datasheet and make sure MPSSE is supported. Jack.
  13. P+ driving a recycled junked laptop LCD

    Carter Lee, Here is the latest design that we have for an HDMI wing. We have confirmed that it works, and I actually manufactured 100 of these, and Alvie has this working with the ZPUino soft processor. But sadly, we never found the time to properly release this wing so it is just sitting around. I mentioned in another post that if you send us your shipping information at support@gadgetfactory.net I will send you one of these wings to play with for free. Jack. BPW5047-HDMI.brd
  14. Hello Pooyan, Awesome! Great work. Hopefully you can get permission to share with the community. I'd love to check out a bitfile, is it targeting the Papilio DUO 512K and Classic Computing Shield? Also, Alvie added filters to the version of the C64 SID chip that we have available. Jack.
  15. Hello Henrik, Have you had any luck with running downloading DesignLab and loading some of the examples to the Papilio board? That might be a good place to start to make sure that there are no unexpected hardware issues lurking beneath the surface. If you can run the Papilio DUO Quickstart and some of the other Demos such as VGA output then that might help get us on the right track. It is also where the latest version of the Retrocade Synth software can be found. Jack.