Hardware specification of mesa 7c81

Simple see here:
forum.linuxcnc.org/39-pncconf/49486-tryi...81-to-pncconf#288255

Or these are some search results
forum.linuxcnc.org/forum/search?query=7c...te=all&childforums=1

Hello !!

Thanks for your help, one last thing is I want to keep my options open.
So, I have tried to port this on Altera DE10 Nano but due to some missing libraries getting errors also, tried to copy that libraries but there are so many libraries so is there any alternate solution to implement this on altera ?

Thanks !!

To use hostmot2 on Altera you would need to at the minimum
duplicate the functionality of the clock generation libraries and perhaps
SRL16. I believe this has been done before (by a MachinKit user) but I don't have a link.
The SRL16 part (rewriting it into generic VHDL) has been done for the
Mesa Efinix Hostmot2 source.

What specifically about  the 7c81 are you trying to port to Altera for the DE10 Nano? Machinekit already has a hostmot2 port for the DE10 Nano, its based on a Mesa 5i25. check out "mksocfpga"

Machinekit's fallen by the wayside but the hm2 port for the DE10 nano worked great, lots of wasted potential there.

Hello !!

I have found following link for altera de10 nano. 
github.com/machinekit/mksocfpga

While building this project facing some errors, also solved some errors but i am not able to solve one error.

Adding snapshot for your reference.


 

Can you help me with this??

Thanks !!

I certainly can't. I got alotta help from the Machinekit group. That was years ago, and I have no idea what state it is in now, Machinekit is pretty much dead. Maybe you'll find some help in my old thread:
groups.google.com/g/machinekit/c/eVhvTnuhblE/m/uv1Ml-gGAgAJ

Gotta watch out as MK is a bit different than LinuxCNC. It's a fork of LinuxCNC but they split the "CNC" stack off into a separate application. So the DE10 was meant to run the Mesa side in FPGA fabric and the realtime Linux/HAL stuff was meant to run on the DE10's ARM cores. The rest of LinuxCNC was supposed to run on a non-realtime remote computer. You can actually run everything on the DE10, which is what I did. It's like running LinuxCNC on a Raspberry Pi 3 with a built in Mesa card.

I haven't touched it for years cuz MK is dead. Be nice if you could get the Mesa side working with LinuxCNC, I could knock the dust off these...

 

The DE10 Has a ton of IO

Hello!!
I have also build the same project which was worked on spartan 6, but facing error.
Adding snapshot for reference.

 

Can you help me with this??
Thank You!! 
 

I think DCM is a Xilinx primitive, so you'll have to search the internet for the Altera equivalent.

Hello !!

I was trying to implement mirroring of axis, as there is no support in GUI. So trying to understand source code but didn't get any luck (salute to the guys who made this..). But then I thought of way to mirror the axis without understanding the source code.

Simply assigned the step and inverted direction to the signals and added 2 output in top and ucf (pins that are not used by source code) file. Got synthesized and able to generate bit file, tested it but only getting one plus when I move forward/backward.

Is there something I'm missing ? Adding SS of snippets that I have added.
 
 
 
 

Also tried changing constraint file using "TIG" like:
NET "my_output" LOC = "A2" | TIG;

But in this I'm getting continuous pulse.

Can you help me with this ?

Thanks !!

There is no need to change source code for something
as basic as inverting an output. Almost any setting is
doable in hal:

setp hm2_7c81.0.stepgen.00.direction.invert_output true