NetBSD 10 and framebuffer consoles setup vs 9.3 (font, multiple...)

[Riccardo Mottola <riccardo.mottola%libero.it@localhost>]

Hi!

I just upgraded from 9.3 to 10 on amd64 with AMD Radeon

I used the sysupgrade method for the first time, I hope I didn't mess up 
with etcupdate step with required a lot of manual work.
Also, since the console was in 80x24 mode, checking diff of etcfiles was 
really cumbersome.
I can reboot and login, however my consoles don't behave as expected 
comapred to 9.3. How can I fix it? Did I miss some configuration?
1) Font size. The framebuffer is enabled (I notice during boot the 
switch from VGA) but the displayed font gives me 80x24 anyway... how can 
I do high-res as before (not 8x8 size on VGA, but classic expected 
framebuffer I got before... this new setup is very unusual)
Do I need to mess in wscons.conf? boot.cfg?

2) multiple consoles. ctrl/alt/F1 doesn't open a new login... just the 
basic console
3) basic console behaves strange. login and shell does work, but if I do 
vi, I cannot navigate, keyboard is mapped wrongly, cursor keys do not 
work... totally crazy. Also certain promts spit out withyout newline, 
only carriage-return. Like it is not behaving as vt100?

Riccardo