graphics-3.0.21-tinycore.tcz is loaded already, probably with Xorg-7.6.tcz.
Curaga said "But I didn't find what's the issue before X?"
Sorry, I'm using wrong terms, as usual. Of course Xvesa is X, too. And Xorg-7.4 was included Xvesa drivers.
As you can see, I don't understand X-stack initialization process, but "normal" distroes are using different runlevel for X/Xorg GUI. I think reason for that is heavy setup needed.