03-07-2019, 01:23 AM
Using Alchitry Labs 1.0.3 on Linux using the ubuntu-provided IceStorm packages (fpga-icestorm et al).
I had the IDE create a new Lucid "Cu IO Element Demo" project and built it.
It fails with:
I had the IDE create a new Lucid "Cu IO Element Demo" project and built it.
It fails with:
Code:
...
Finished synthesis.
Project IceStorm doesn't support .sdc constraints. "/home/.../CuDemo/work/constraint/alchitry.sdc" will be ignored.
seed: 1
device: 8k
read_chipdb +/share/arachne-pnr/chipdb-8k.bin...
supported packages: cb132, cb132:4k, cm121, cm121:4k, cm225, cm225:4k, cm81, cm81:4k, ct256, tq144:4k
read_blif /home/.../CuDemo/work/alchitry.blif...
prune...
read_pcf /home/.../CuDemo/work/constraint/alchitry.pcf...
instantiate_io...
fatal error: $_TBUF_ gate must drive top-level output or inout port
Finished placement.
Error: Failed to open input file.
Bin file (/home/.../CuDemo/work/alchitry.bin) could not be found! The build probably failed.