Links

Computers

Tailscale

BSDs

FreeBSD

FreeBSD handbook

FreeBSD porter’s handbook

OpenBSD

NetBSD

FreeBSD ports I maintain

• ChessX (homepage)
• wmctrl-fork (homepage)

Retrocomputing

MSX

MARMSX page

MSX2 technical handbook

MSX assembly page, includes

• MSX BIOS calls
• MSX2 subrom calls
• MSX-DOS 2.20 system calls

Turbo Pascal 3 reference manual

Z80

Z80 CPU user manual from Zilog in PDF

Get “Programming the Z80” book by Rodnay Zaks here

eZ80

Local copy of Zilog’s eZ80 CPU user manual, the original is here

CP/M

CP/M 2.2D Users Guide

John Eliott’s CP/M page, including

• BDOS calls

CP/M Programmers Guide

Wordstar 4 reference manual

Chess

chess.com

lichess

GothamChess on YouTube

Gata Kamsky on twitch