success for me too- after 'tce-load'-ing i2c-3.16.6-tinycore64.tcz, i can modprobe igb, and then /etc/init.d/dhcp.sh got me up.
I also find it annoying that the "Browse TCZs" link takes me to a text page with no links for downloading.
Can anyone tell me if they have successfully used the 64-bit "grub2.tcz" ?
Note that this was packages wrong; one of the executables (I forget, grub-probe I think) is 32b, not 64b
m