Experimental Physics and
Industrial Control System

Dirk Zimoch <[email protected]> · Fri, 22 Oct 2010 17:03:03 +0200

If you want to use e500 core PPC, you better upgrade to vxWorks 6.7+.
VxWorks 6 is available for Linux, too.
Note that the e500V2 uses a completely different approach for floating
point compared to PPC604 and friends. It has so called "embedded
floating point" (I call it "poor man's floating point"). It uses the
same registers as integer operations (extended to 64 bit). This requires
a completely different (and smaller) set of assembler instructions that
the older compiler does not know. The floating point performance is much
worse (if you do anything more than +-*/). The e500V1 does not have
floating point at all.
Dirk
çæ wrote:

Hello,

I want to ask a question about the cross-gcc-2.9.6.tar.gz provided
by the SNS website http://ics-web.sns.ornl.gov/dht/ .

My task is to port CSNS RCS LLRF system to EPICS,my EPICS environment is
as follows:

EPICS version 3.14.8.2

vxWorks version 5.5.1

cross compiler crossgcc2.9.6

host RHEL4.0

target cPCI6200 board (have been chosen,but not purchased yet)

The problem is that the crossgcc2.9.6 supports
ppc403,ppc405,ppc440,ppc603,ppc604 and ppc860 CPU families,but the CPU
board cPCI6200 is based on the CPU MPC8572,which belongs to ppc85xx CPU
family,thus the EPICS IOC compiled by crossgcc2.9.6 can not run on cPCI6200.

Is there any way to make the crossgcc2.9.6 support ppc85xx ?

Thanks

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System