Differential encoder hard crashes the PC MESA7i77

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28 Mar 2026 16:53 #344885 by grossm5000
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
No, I was just setting up. I have a couple toggle switches working on gpio but that’s it. I was just getting excited I could see it talking through halshow. No servo/spindle drivers yet.
I figured the MPGs should have been the next easiest thing to do

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30 Mar 2026 16:29 #344960 by grossm5000
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
Well, I found a pile of old Dell Optiplex machines for cheap. Im just gonna try a new computer.
I really wish i could have found a way to make the Asus A520M work. Looks like a tough board good for machining environments.

Ill keep everyone posted if the new computer(s) work out :/

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31 Mar 2026 19:05 #345001 by grossm5000
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
Ok guys, 
  • got a totally new PC (dell optiplex 5050)
  • install a completely new image of linuxCNC
  • put the 6i25 board in 
  • The LSPCI command seems to find the board and the daym mesaflash still cant find the board!The PC is not hooked up to anything but power and internet. 
  • Mesaflash is up to date...according to the Synaptic manager....(3.4.9)
 

what in the name of the gods am i doing wrong???? Please help
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31 Mar 2026 19:34 #345005 by tommylight
Replied by tommylight on topic Differential encoder hard crashes the PC MESA7i77
Take pictures of both cards and post them here, do not touch the jumpers.
Did you y any chance set them to "setup mode" or something like that? been to long so i am a bit fuzzy....

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31 Mar 2026 19:42 - 31 Mar 2026 19:57 #345006 by PCW
Again the memory area is disabled, you might try the setpci option

Also, if Linux runs and accesses the card, you may be able to bypass the mesaflash issue with:

sudo mesaflash --recover --device recover  --write 5i25_7i77x2.bit
Last edit: 31 Mar 2026 19:57 by PCW.
The following user(s) said Thank You: grossm5000

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31 Mar 2026 19:54 #345008 by grossm5000
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
PCW: no luck on the setpci option:

 
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31 Mar 2026 20:04 #345009 by grossm5000
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
here are the pictures. the one with the white folding table background is the old one.   

Thank you. I am starting to feel like I really must have missed something obvious here...
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