arachne-pnr - Place and route tool for iCE40 family FGPAs
arachne-pnr [options] <filename>
Arachne-pnr implements the place and route step of the hardware
compilation process for FPGAs. It accepts as input a technology-mapped
netlist in BLIF format, as output by the Yosys synthesis suite for example.
It currently targets the Lattice Semiconductor iCE40 family of FPGAs. Its
output is a textual bitstream representation for assembly by the IceStorm
icepack command. The output of icepack is a binary bitstream which can be
uploaded to a hardware device.
- -h,
--help
- Print this usage message.
- -q,
--quiet
- Run quiet. Don't output progress messages.
- -d <device>,
--device <device>
- Target device <device>. Supported devices: 1k - Lattice
Semiconductor iCE40LP/HX1K 8k - Lattice Semiconductor iCE40LP/HX8K
Default: 1k
- -c <file>,
--chipdb <chipdb-file>
- Read chip database from <chipdb-file>. Default:
/usr/share/arachne-pnr/chipdb-<device>.bin
- --write-binary-chipdb
<file>
- Write binary chipdb to <file>.
- -l,
--no-promote-globals
- Don't promote nets to globals.
- -B <file>,
--post-pack-blif <file>
- Write post-pack netlist to <file> as BLIF.
- -V <file>,
--post-pack-verilog <file>
- Write post-pack netlist to <file> as Verilog.
- --post-place-blif
<file>
- Write post-place netlist to <file> as BLIF.
- --route-only
- Input must include placement.
- -p <pcf-file>,
--pcf-file <pcf-file>
- Read physical constraints from <pcf-file>.
- -P <package>,
--package <package>
- Target package <package>. Default: tq144 for 1k, ct256 for 8k
- -r
- Randomize seed.
- -m <int>,
--max-passes <int>
- Maximum number of routing passes. Default: 200
- -s <int>,
--seed <int>
- Set seed for random generator to <int>. Default: 1
- -w <pcf-file>,
--write-pcf <pcf-file>
- Write pin assignments to <pcf-file> after placement.
- -o <output-file>,
--output-file <output-file>
- Write output to <output-file>.
This manual page was written by Ruben Undheim
<ruben.undheim@gmail.com> for the Debian project (and may be used by
others).