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| author | David Shah <davey1576@gmail.com> | 2018-07-29 14:17:02 +0200 |
|---|---|---|
| committer | David Shah <davey1576@gmail.com> | 2018-07-29 14:17:02 +0200 |
| commit | f466ad0faf6d5757d1cb3259486bb7604b9064f2 (patch) | |
| tree | 00c479fe3a4a6e221ddae60454dbb83b92fd8fe8 | |
| parent | f448d7ca77ff5481f9ec4d9278ad653504aec01c (diff) | |
| download | nextpnr-f466ad0faf6d5757d1cb3259486bb7604b9064f2.tar.gz nextpnr-f466ad0faf6d5757d1cb3259486bb7604b9064f2.tar.bz2 nextpnr-f466ad0faf6d5757d1cb3259486bb7604b9064f2.zip | |
Update README.md wrt ECP5
Signed-off-by: David Shah <davey1576@gmail.com>
| -rw-r--r-- | README.md | 7 |
1 files changed, 6 insertions, 1 deletions
@@ -71,11 +71,16 @@ make -j$(nproc) sudo make install ``` -- For an ECP5 blinky, first synthesise using `yosys blinky.ys` in `ecp5/synth`. + - For an ECP5 blinky, first synthesise using `yosys blinky.ys` in `ecp5/synth`. - Then run ECP5 place-and route using `./nextpnr-ecp5 --json ecp5/synth/blinky.json --basecfg ecp5/synth/ulx3s_empty.config --bit ecp5/synth/ulx3s.bit` - Note that `ulx3s_empty.config` contains fixed/unknown bits to be copied to the output bitstream - You can also use `--textcfg out.config` to write a text file describing the bitstream for debugging + - More examples of the ECP5 flow for a range of boards can be found in the [Project Trellis Examples](https://github.com/SymbiFlow/prjtrellis/tree/master/examples). + + - Currently the ECP5 flow supports LUTs, flipflops and IO. IO must be instantiated using `TRELLIS_IO` primitives and constraints specified + using `LOC` and `IO_TYPE` attributes on those instances, as is used in the examples. + ### nextpnr-generic The generic target allows to run place and route for an arbitrary custom architecture. |