I am running piCore 9.0 on a Raspberry Pi 3 B, but unlike the x86 version, I don't get any console output during boot. It boots pretty slow, and I'd like to see which extension is taking so long. I've added the showapps option in cmdline3.txt, and removed the quiet option, but there isn't any output. All I see is the four raspberry logos with a blinking cursor until the shell prompt comes up.