Colorlight i5 Pin mapping.

[bmentink]

Hi Tom,

Could not find a way to contact you on the Colorlight i5 project page , so doing so here.

I see you did some FPGA mapping to the i5 extension board. I am wondering if you came across the PROGRAMN pin (W3) from the ECP5 FPGA, I can't see it anywhere.

I would like to implement a bootloader for this board, but need access to the PROGRAMN pin to multi-boot images.

Thought I would ask you, before I go and Xray the board, or remove the FPGA to see if that pad goes anywhere on the board.

Cheers, Bernie

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@drudru @wallclimber21 @pzb @lachesis Anyone?

[tomverbeure]

Hi Bernie, I haven’t looked at this in a long time, but I’m not aware of how the PROGRAMN is connected: I didn’t do any serious reverse engineering on this board since others had already done that.

Tom

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@tomverbeure Thanks. Do you know who did the reverse engineering on the board? Maybe will try and get hold of them. It's a great little board, I have bought 6 of them at $16 a piece plus shipping, a bargain for my projects.

I am running Mecrisp-Forth on them in multiple projects, but would like a bootloader for easier upgrades. The PROGRAMN line is essential for this ..

Cheers

[tomverbeure]

@tomverbeure Thanks. Do you know who did the reverse engineering on the board?

I don't. Or if I did, I don't remember that I knew. :-)

Tom

[bmentink]

Yep, once you clock up one or two years, that's what happens :)