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switch readme to nextpnr-himbaechel #228

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Jan 23, 2024
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switch readme to nextpnr-himbaechel #228

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20 changes: 10 additions & 10 deletions readme.md
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Expand Up @@ -8,7 +8,7 @@ This project is supported by our generous sponsors. Have a look at our [contribu

## Getting Started

Install the latest git [yosys](https://github.com/yosyshq/yosys#setup), [nextpnr-gowin](https://github.com/YosysHQ/nextpnr#nextpnr-gowin), [openFPGALoader](https://github.com/trabucayre/openFPGALoader), and Python 3.8 or higher. [Yowasp](http://yowasp.org/) versions of Yosys and Nextpnr are also supported.
Install the latest git [yosys](https://github.com/yosyshq/yosys#setup), [nextpnr-himbaechel](https://github.com/YosysHQ/nextpnr#gowin), [openFPGALoader](https://github.com/trabucayre/openFPGALoader), and Python 3.8 or higher. [Yowasp](http://yowasp.org/) versions of Yosys and Nextpnr are also supported.

Currently supported boards are
* Trenz TEC0117: GW1NR-UV9QN881C6/I5
Expand Down Expand Up @@ -49,10 +49,10 @@ cd examples
yosys -D LEDS_NR=8 -p "read_verilog blinky.v; synth_gowin -json blinky.json"
DEVICE='GW1NR-UV9QN881C6/I5' # change to your device
BOARD='tec0117' # change to your board
nextpnr-gowin --json blinky.json \
--write pnrblinky.json \
--device $DEVICE \
--cst $BOARD.cst
nextpnr-himbaechel --json blinky.json \
--write pnrblinky.json \
--device $DEVICE \
--vopt cst=$BOARD.cst
gowin_pack -d $DEVICE -o pack.fs pnrblinky.json # chango to your device
# gowin_unpack -d $DEVICE -o unpack.v pack.fs
# yosys -p "read_verilog -lib +/gowin/cells_sim.v; clean -purge; show" unpack.v
Expand All @@ -61,11 +61,11 @@ openFPGALoader -b $BOARD pack.fs

For the Tangnano9k board, you need to call nextpnr and gowin_pack with the chip family as follows:
```
nextpnr-gowin --json blinky.json \
--write pnrblinky.json \
--device $DEVICE \
--family GW1N-9C \
--cst $BOARD.cst
nextpnr-himbaechel --json blinky.json \
--write pnrblinky.json \
--device $DEVICE \
--vopt family=GW1N-9C \
--vopt cst=$BOARD.cst
gowin_pack -d GW1N-9C -o pack.fs pnrblinky.json
```

Expand Down
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