Acorn Microcomputer (Acorn System 1)

• Mike Cowlishaw's Acorn Pages - These pages contain history, firmware, documentation, and many excellent pictures of a lesser-known European 6502 kit computer.

  MOS Technology KIM-1

• What is the KIM-1? - The answer to this question can be found in this technical document from Ruud Baltissen.
• Build Your Own KIM-1 - After you know what a KIM-1 is, Ruud shows you how to make your own modern KIM-1 replica, complete with schematics and source code.
• Erik's KIM-1 Page - Erik Van den Broeck's page offers excellent HTML versions of all of the original KIM-1 manuals for reading online. The (almost) entire text of the First Book of KIM and MICROCHESS by Peter Jennings are also available here.
• Rich's Classic Computing Entry Page - Rich Cini has the KIM-1 schematics, Hardware Manual, User's Guide, Hints Guide, User's Notes, and Monitor ROM source code online. His documents page also includes scans of many Rockwell AIM-65 documents.
• KIMATH - MOS Technology developed this high-quality floating point math package for the KIM-1. Charles R. Bond has provided it, complete with documentation, on this page.
• MATHPAC - Paul R. Santa-Maria submitted MATHPAC, an extension to KIMATH. This ZIP file contains the original article in PDF and a plain text version.
• KIM-1 Enthusiasts Page - Vern Graner has put together this resource for KIM-1 users with documents, programs, and a photo gallery.
• KIMplement - Cameron Kaiser has written a KIM-1 emulator that runs on the Commodore 64.
• vKIM ("Virtual KIM") - Eugene Dorr has written a KIM-1 emulator for the Palm. It is complete enough to run many programs from "The First Book of KIM" and its source code is available under the GNU Public License.

  Synertek SYM-1

• The Synertek SYM-1 Resources section contains manuals and binaries for the SYM-1, including its monitor, RAE, the BASIC interpreter, and more.

  Tangerine Microtan 65

• The Microtan65 Page - Fabrice Frances has a site dedicated to the Tanbert Microtan65, a lesser-known early 6502 computer. Fabrice also hosts Oric World.
• Geoff's Microtan65 Page - Geoff Macdonald has a Microtan65 page with an emulator, Microtan software, and magazine articles.
• David's Microtan65 Emulator [archive.org] - David Brown once offered an impressive emulator for Windows that came bundled with several Microtan programs.