-
Lattice's website states, that iCE40-HX4k and -HX8k both feature two PLLs.
* http://www.latticesemi.com/en/Products/FPGAandCPLD/iCE40
I created a Verilog project in which I use both PLLs. Synthesi…
-
The syntax of the `.comment` statement expected by IceStorm does not appear to match the syntax output by `arachne-pnr`.
`icepack` expects comments to be in the following syntax:
.comment
…
-
As the version of arachne-pnr available in the Fedora 28 repositories is relatively old (June 2017), I have prepared my own RPM of the current git head for personal use.
Unfortunately it crashes wh…
-
I am getting an error from arachne-pnr:
arachne-pnr -d 1k -P vq100 -p src/iceblink40.pcf bin/top.blif -o bin/top.txt
bin/top.blif:1443: fatal error: **unknown model `$_DFFSR_PPP_'**
blif file w…
-
Hello,
I've a lot of issues with the SRAM example with the io constraints like `sram_addr_to_pad` not known.
When I try to change it to `ADR` in the file `sram_io_ice40`, I've got an error:
`ch…
-
I am building in-browser tool to design and program FPGAs using Yosys and Arachne-PNR.
Yosys provides ability to build for the ASM.JS target. Would it be possible to add similar ability to the Arach…
-
As the arachne-pnr github says: Arachne-pnr is not maintained anymore; use nextpnr instead, which is a complete functional replacement with major improvements.
The commands to use nextpnr-ice40 wit…
-
### Steps to reproduce the issue:
Consider the following verilog code.
```
module demo (output y);
assign y = 0;
endmodule
```
when synthesized using
```
yosys -p 'synth_ice40 -blif demo…
-
```
cd tests/fsm && bash run-test.sh
+ arachne_pnr=../../bin/arachne-pnr
+ rm -rf temp
+ mkdir temp
+ python generate.py
Traceback (most recent call last):
File "generate.py", line 46, in
…
-
Not sure if this is a bug in yosys for generating broken files or in arachne-pnr for not parsing the input correctly. In either case if you first compile a .v file with in a path with a space in it wi…