Using the parallel port on the MESA 7i95?

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02 Jun 2021 03:21 #210932 by arch dude
Thanks for your help. It took me most of the afternoon to install a VM and then install a full-up ISE environment. I have not yet built the 7i95.zip. I intend to build it with no modifications and then compare my bitfile with the provided bitfile, but I'm too tired to do that today.

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07 Jun 2021 14:17 #211420 by arch dude
After returning from a little vacation, I unzipped 7i95.zip into a subdirectory of my home directory. Using
tom-itx.no-ip.biz:81/~webpage/emc/xilinx...14_install_index.php
as a guide (a hint, really) I set up the project in ISE. There were some minor glitches, all recoverable, until I actually tried to build the project. I encountered three lines of code in the top VHDL file that were not VHDL syntax:
use work.@card@.all
use work.@pin@.all
It looks like the @xxx@ construct is some sort of parameterization or macro substitution, so a just did a brute-force edit to insert the correct card and pin. However, I would prefer to do this properly if ISE and/or VHDL have this capability, or if Mesa has some sort of standard procedure I should be using. Where should I look?

The project builds with a new Pin file that is an exact duplicate of the old one except for the name. I will now attempt to modify my new pin file.

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10 Jun 2021 13:53 #211699 by andypugh
Are you using the Mesa source files, or the LinuxCNC-ised version? The latter is now rather out of date, so I suspect that you won't be using that with a 7i95.

I will move this topic to Driver Boards where it is more likely to be seen by the chap that knows this stuff.

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