Asrock Q1900B-ITX

I used the old rtai version with this board and it worked well.
The problem was that I wanted a newer os version and couldn't get it to work correctly. Latency test was ok but starting linuxcnc always resulted in that unexpected delay.
I solved the situation with another board (Portwell WADE 8012) wchich works well (I have 1 with mesa pci, 2 with mesa eth).

Is there a way to not rely on motherboard latency capabilities and use linuxcnc as software to control some independent hardware module which will generate steps?

Mesa boards:
www.mesanet.com
www.mesaus.com
www.eusurplus.com

On an ASRock J3355B-ITX (celeron 2 cores) , I just add a MESA 6i25 to the config to solve latency problems and to remove stepping generation form the motherboard cpu. I have keep the same pinout as the parport.
the 6i25 was available form eusurplus fiew weeks ago. A little expensive with vat and shiping.

macsddau@linuxcnc wrote:

On an ASRock J3355B-ITX (celeron 2 cores) , I just add a MESA 6i25 to the config to solve latency problems and to remove stepping generation form the motherboard cpu. I have keep the same pinout as the parport.
the 6i25 was available form eusurplus fiew weeks ago. A little expensive with vat and shiping.
 

And what BASE_PERIOD became after installing this MESA 6i25 ?

Mesa boards = no base period