>
> 3.4.55-rtai-2 was a test kernel and never officially released by
> LinuxCNC.  That said, it's still available here;
>
> http://highlab.com/~seb/linuxcnc/rtai-for-3.4-prerelease/
>
> However, i'm very interested in figuring out what's different between
> 3.4.55-rtai-2 and 3.4-9-rtai-686-pae that the new, official kernel
> doesn't work for you.  What are you trying to do, what is your program,
> how are you compiling it, and what error are you getting with the new
> kernel?

--
> Sebastian Kuzminsky
>

Dear Sebastian,

Thanks for your suggestion.

 I am modifying the PMAC PCI driver so that it can run under the user space
LXRT of RTAI . PMAC is a motion control card from Delta Tau Inc.
Considering PMAC itself is a CNC system, I am not going to modify it into
a HAL driver for the moment. However, the RTAI real time capability is
needed. PMAC PCI has a dual port RAM (DPRAM) which be used as a fast
communication channel with a PC.

I have an error in loading the real-time PMAC PCI driver. The main change
is the addition of " reset_rt_fun_ext_index".  I have tested the driver
successfully in lower version linux-image-3.4.55-rtai-2. However, when I
update the rtai to linux-image-3.4-9-rtai-686-pae, it shows the folllowing
error.

pmacpci_rt: no symbol version for reset_rt_fun_ext_index
pmacpci_rt: Unknown symbol reset_rt_fun_ext_index (err -22)

 I installed the RTAI  following the steps in <http://linuxcnc.org>
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?UpdatingTo2.6
Therefore I do not know what is the version of RTAI. Anyway this error
happens when updating RTAI from 3.4.55-rtai-2 to 3.4-9-rtai-686-pae. I
uploaded the whole folder of the PMAC PCI  driver

http://pan.baidu.com/s/1ntt6KUd

Xue-Cheng XI
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