Logic Analyser

[Zhivko]

Any possibility to come up with a (low cost) logic analyser considering the brain power present amongst members of this forum?

[ajeandet]

It's a good idea, since there is no really available opensource one.
I would buy some for my lab, if it would be base on FPGA and with some extra memory.
Something equivalent to the analog discovery even without analog functions.

Best regards,
Alexis.

[olimex]

if somebody have FPGA knowledge and can implement this there is MOD-VGA and MOD-VGA-32MB which could be used as base

[ajeandet]

Yes, maybe for prototyping but it lacks a ftdi chip(ft2232H) for FPGA loading and communication.
If I have some free time I will try to prototype something, for ones interested we share some vhdl code in my lab relying on the grlib-gpl.
If somebody just prototype a "SUMP core" in VHDL or verilog then most of the work is done:
http://www.sump.org/projects/analyzer/fpga/

Best regards,
Alexis.

[Zhivko]

I do not have those skills but I would be happy to get involved on the moremundane level of laying out the artwork and fabricating prototype board.

[robarago]

Maybe I don't have all the brain power (I'd prefer VHDL to Verilog), but I have the hardware (MOD-VGA, JTAG programming cable)!

Where do we start from?

[olimex]

this may be good starting point and not to re-invent the wheel: http://www.sump.org/projects/analyzer/

[Matthias]

I am using the Open Logic Sniffer http://dangerousprototypes.com/open-logic-sniffer/
and it does the basic things for little money
it would be great to have more memory and some analog channels (no need for BNC and high sensitivity)
the software could be the same!