Search found 18 matches

by Martoni
Wed Mar 13, 2024 4:03 pm
Forum: SymbiFlow
Topic: Can't find symbiflow command option documentation
Replies: 0
Views: 78

Can't find symbiflow command option documentation

With qf_apps, I'm launching synthesis and place&route with a Makefile named fpga/rtl/Makefile.symbiflow This makefile launch some commands that begin by `symbiflow_*`: - symbiflow_route - symbiflow_place - symbiflow_pack - ... Where can I find options documentation for this commands ? And is the...
by Martoni
Wed Mar 13, 2024 3:55 pm
Forum: SymbiFlow
Topic: Displaying place&route result
Replies: 1
Views: 28771

Re: Displaying place&route result

On the website of VPR project we can view some routing animation. Is it possible to do same thinks with EOS_S3 routing ?
by Martoni
Tue Jan 23, 2024 3:06 pm
Forum: EOS-S3
Topic: Is it possible to reach 72Mhz clocked design in eFPGA ?
Replies: 3
Views: 1663

Re: Is it possible to reach 72Mhz clocked design in eFPGA ?

Unfortunately, The EOS S3 FPGA is designed for low power and is not able to achieve 72MHz performance. This is why the FPGA clocks are separated from the main Cortex clock M4-F Realistically the performance is limited to around the frequency you are seeing. We have done some highly tuned simple shi...
by Martoni
Sun Jan 21, 2024 8:11 pm
Forum: EOS-S3
Topic: Is it possible to reach 72Mhz clocked design in eFPGA ?
Replies: 3
Views: 1663

Is it possible to reach 72Mhz clocked design in eFPGA ?

I saw in datasheet that FPGA clock domain can be configured up to 72Mhz. But If I synthesize the helloworldhw example I get a max frequency of 27.8Mhz.

In route.log :
Final critical path delay (least slack): 35.8776 ns, Fmax: 27.8725 MHz
Is it possible to increase this performances ?

Thanks
by Martoni
Fri Jan 19, 2024 9:24 am
Forum: QuickFeather
Topic: yosys: undefined symbol: ffi_type_double, version LIBFFI_BASE_7.0
Replies: 4
Views: 4461

Re: yosys: undefined symbol: ffi_type_double, version LIBFFI_BASE_7.0

Unfortunately, this version of Symbiflow has only been tested on Ubuntu 20_04. I am glad that you have found a fix for your Linux distribution.
Is there a new version ?
Will it be patched ?
by Martoni
Fri Jan 19, 2024 7:51 am
Forum: EOS-S3
Topic: What is the engraving finesse of the OES-S3?
Replies: 0
Views: 1508

What is the engraving finesse of the OES-S3?

I can't find it under datasheet.

Is it also possible to find out which foundry is used ?

Thanks
by Martoni
Thu Jan 18, 2024 10:33 am
Forum: General Discussion
Topic: Is this forum alive ?
Replies: 1
Views: 1677

Is this forum alive ?

Hello,

This forum seems to be asleep. Most of question and answer are old and no one respond to new asked question.

Is there another platform for question about quickfeather and its symbiflow toolchain ?

Thanks
by Martoni
Wed Jan 17, 2024 6:16 am
Forum: Documentation
Topic: Looking for documentation about eFPGA macrocells (EOS-S3)
Replies: 3
Views: 1916

Re: Looking for documentation about eFPGA macrocells (EOS-S3)

I can't find eFPGA mapping of macrocells in this datasheet or this.
by Martoni
Mon Jan 15, 2024 9:03 pm
Forum: Documentation
Topic: Looking for documentation about eFPGA macrocells (EOS-S3)
Replies: 3
Views: 1916

Looking for documentation about eFPGA macrocells (EOS-S3)

Hello, When I launch synthesis with QORC commands I get log files that give occupancy statistics in file «/opt/qorc-sdk/qf_apps/qf_helloworldhw/fpga/rtl/build/helloworldfpga_synth.log» (for helloworld app) : 13. Printing statistics. === helloworldfpga === Number of wires: 1055 Number of wire bits: 1...
by Martoni
Wed Dec 06, 2023 9:08 pm
Forum: QuickFeather
Topic: yosys: undefined symbol: ffi_type_double, version LIBFFI_BASE_7.0
Replies: 4
Views: 4461

Re: yosys: undefined symbol: ffi_type_double, version LIBFFI_BASE_7.0

I found a workaround by deleting libffi.so.7 link in conda/lib directory : $ cd /opt/qorc-sdk/fpga_toolchain_install/v1.3.1/conda/bin/./../lib/ $ mv libffi.so.7 libffi.so.7.legacy After that, I can launch yosys without problem : $ which yosys /opt/qorc-sdk/fpga_toolchain_install/v1.3.1/conda/bin/yos...