How to flash bitstream to tang nano 9k

1. Download Gowin Programmer

Access the following site (account registration required).
https://www.gowinsemi.com/en/support/download_eda/

Download programmer.

Copy the Programmer folder in the downloaded ZIP file to any location.

2. Connect Tang Nano 9k to PC with USB cable

3. Run Gowin Programmer。

Run "Programmer\bin\programmer.exe" in the copied Programmer folder.

When the screen below appears, select Save and close.
If it does not display correctly, try installing the driver from the executable file located in the Programmer\driver folder.

 

4. Add Tang Nano 9k from Scan Device (magnifying glass icon)

The screen below will be displayed, so select GW1NR-9C.
(If GW1NR is printed on the IC on Tang Nano)

5. Select the added GW1NR-9C line and configure writing settings from Configure Device (pencil icon)

Set Access Mode to Embedded Flash Mode and specify the fs file in the swancolorHD-main\bitstream folder for File Name.
The resolution that can be displayed depends on the monitor you are using, so create an fs file that can be displayed appropriately.
(In my case, it had to be 720p, and there was some noise at 75Hz, so I chose swnHD_720p.fs)
Select Save to complete.

 

6. Flash to Tang Nano from Program/Configure (play icon)

When flashing is completed without any problems, Finished. is displayed.
(I was successful with this, so I don't know what to do if an error occurs...)