HS3 downloader based on FT232HL, tested on my Xilinx development board and available
With level conversion, it should be able to support some low-voltage boards
Four-layer board design (because there is a coupon...
Then there is a small problem with this version. If the horn base in the picture is used, the silk screen defined by the top pins will be blocked. .
The hardware reference is https://oshwhub.com/EAFJLDSKF/digilent-hs3
For software, see https://github.com/LE-TOM/JTAG-HS3
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