[9fans] AMD Athlon 64

[xspager]

Frinds users of Plan9.
I can run plan9 perfectly in a Athlon 64 machine with a Asus A8V-MX in
32bits mode, VGA in 1024x768x16, but no Ether and no sound(AC'97). But
I want to build all(kernel and apps) to run in pure 64bits mode. I
can't found the 6c, mentioned in man page 2c(1), to build. I found a
file /sys/src/cmd/8c/cgen64.c, it is to 8c use AMD 64bits capabilities?
Plan9 can use AMD64 all 64 mode?