TinyCore base, 14MB boot. Needs to be hard wired (ethernet). But once booted (I've booted from DVD), tce-load -wi firmware-atheros (or whatever firmware your wireless uses), tce-load -wi openssh wifi ... and then run sudo wifi.sh and connect to your wireless. If you create a /tce folder on HDD and copy /tmp/tce/optional to that, then it picks up those packages again at the next reboot, so you just have to sudo wifi.sh to connect again (no longer need ethernet connected).
I've accessed blackflag.acid.org via ssh into hashbang ssh server. Using a linux TERM type and its displaying fine. TERM=linux telnet blackflag.acid.org
--- Mystic BBS v1.12 A43 2019/03/03 (Windows/32)
* Origin: Black Flag <ACiD Telnet HQ> blackflagbbs.com (46:1/104)