Upgrading from an old athlon to a new 64 bit one.

I have just stuck the disks from an old AMD Athlon(tm) 
(1333.39-MHz  
686-class CPU) into a new box with an AMD Athlon(tm) 64
Processor  
3800+ (2387.78-MHz 686-class CPU).  I am still building a
daily kernel  
with the old configuration and all is well.  Of course the
old  
configuration was/is i386.  Now I need to compile for 64 bit
apps.  I  
have configured a slightly modified sys/amd64/conf/GENERIC
kernel and  
was going to build it as a test only to find out that a
simple make  
buildkernel KERNCONF=AMD doesn't find /sys/amd64/conf/AMD. 
There is  
an old reference in UPDATING from 5.0 that didn't work
either.

The other question is on today's make world all seems to
still be  
compiled ELF 32-bit LSB executable, Intel 80386 so I am sure
missing  
something very simple.

I'm actually going to update serveral machines, both Current
and  
RELENG.  All of which are up to date.  Hopefully there will
be no  
major problems.  I also plan to recompile all ports once I
am able to  
build and install an AMD64 world and kernel.  Right now all
is working  
fine with todays, sources and kernel except they are
compiled for Intel.

Any other suggestions appreciated.  Maybe someone might
recommend  
upgrading the RELENG boxes to CURRENT first?

Thanks,

ed
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On Wed, 27 Jun 2007 14:54:52 -0500
eculpunixmania.com wrote:

> I have just stuck the disks from an old AMD Athlon(tm) 
(1333.39-MHz  
> 686-class CPU) into a new box with an AMD Athlon(tm) 64
Processor  
> 3800+ (2387.78-MHz 686-class CPU).  I am still building
a daily
> kernel with the old configuration and all is well.  Of
course the
> old configuration was/is i386.  Now I need to compile
for 64 bit
> apps.  

Are you sure about that? there are few compelling reasons to
go to
64-bit, if you already have a working system. As far as
performance is
concerned, it may go either way.

> Right now all is
> working fine with todays, sources and kernel except
they are compiled
> for Intel.

They are compiled for i386; Intel and AMD both produce CPUs
for both
platforms.
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