This Commodore plus/4 hardware manual was downloaded from http://www.javalemmings.com/plus4/programming/hardwaredocs.htm and the images were reduced and improved by William Levak. See manual.html if you are using an HTML browser.
Mirror sites: FUNET (ftp http) ibiblio.org (ftp http) – General information – File types – CD-R snapshots – Data transfer
cbm-adm@ftp.funet.fi