Compact Gowin GW2AR board with HDMI, audio amplifier, TF card slot, SDRAM, and onboard debugger.
GW2AR-LV18QN88C8/I7open toolchain28.17 USDeducationvideoaudiorisc-v
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Gowin GW2A-18 dock-style board intended for secondary development with more connectors than Tang Nano boards.
GW2A-LV18PG256C8/I7open toolchainprice unknowneducationvideonetworkingrisc-v
| Field | Tang Nano 20K | Tang Primer 20K Dock |
|---|---|---|
| Chip | GW2AR-LV18QN88C8/I7 | GW2A-LV18PG256C8/I7 |
| Family | GW2A/GW2AR | GW2A |
| Device type | FPGA | FPGA |
| Price | 28.17 USD | unknown |
| Toolchains | Gowin EDA, Yosys + nextpnr-gowin + Apicula | Gowin EDA, Yosys + nextpnr-gowin + Apicula |
| Open toolchain | yes | yes |
| Interfaces | HDMI, MAX98357A I2S amplifier path, TF card slot, USB Type-C, Onboard BL616 JTAG, USB UART | Ethernet, HDMI, USB 2.0, SD card, JTAG/UART connector |
| Memory | 32-bit SDR SDRAM 64 Mbit, Onboard flash 64 Mbit | DDR3 1 Gbit, NOR flash 64 Mbit |
| Documentation | 78 | 68 |
| Difficulty | beginner | intermediate |
| Openness score | 76 | 70 |
| Where to get help | Sipeed forum, r/GowinFPGA | Sipeed forum |
| Typical risks | Verify exact board revision before using pin labels, constraints, or power assumptions. Onboard debugger recognition Flash persistence mode | Dock-specific features must be checked against the dock revision documentation. |
| Better for | beginner learning | open-source flow |