> We are considering buying an "mv177" rather than "mv167"
> for one of the systems in our project.
>
> Are there any issues that I should be aware of running
> EPICS under vxWorks 5.2 on the "mv177"?
>
> Presumably we will need a new BSP. Does the same cross-compiler
> work for both boards - i.e. could you load a "167" image on
> the "177"?
We are using a few MVME177's as direct replacements. Yes you need a new BSP.
With EPICS R3.13, just add
CROSS_COMPILER_TARGET_ARCHS = mv167 mv177 in config/CONFIG
and
ARCH = mv177 in iocBoot/iocName/Makefile
and let the Makefiles do their magic.
At APS, MV177's don't seem to boot from fast solaris machines, we have to
specify a boot host that's running sunOs. This has not been a problem at
PPL, however, where they are running a later version of Solaris and vxWorks
5.3.
>
> Does anyone have speed comparisons between the two?
In my application, the mv177 accomplished the image processing algorithms in
a little less than half the time it took the 167 .... see below :
6/15/98 Using MV200support.c with edits up to 6/12 on an mv167
calculating both X & Y ...
No plots, No text - Total Field Process Time = 14725 usec
No plots, text update - Total Field Process Time = 33153 usec
Plots, No text - Total Field Process Time = 27246 usec
Plots, text - Total Field Process Time = 45281 usec
Using MV200support.c with edits up to 6/12 on an mv177
calculating both X & Y ... (also fixed mv167-timer.c)
No plots, No text - Total Field Process Time = 7166 usec
No plots, text update - Total Field Process Time = 14701 usec
Plots, No text - Total Field Process Time = 12053 usec
Plots, text - Total Field Process Time = 19706 usec
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