Re: An Apple /// Circuit Description and ROM Listing

[et472@FreeNet.Carleton.CA (Michael Black)]

Patrick Schaefer (PSchaefer@lycosxxl.de) writes:
> ... could be found in US Patent 4,383,296 by Wendell. B. Sander. This 
> provides a lot of interesting information about this not very well 
> documented machine.
> 
> 
> Besides that,
> 
> * US 4,136,359 and US 4,278,972 describe the Apple II video logic, US 
> 4,210,959 the Disk II controller ("Woz Machine"), all filed by Steve 
> Wozniak himself.
> 
> * US 4,130,862 by F. R. Holt discusses the Apple II power supply.
> 
> * US 4,464,652 by Bill Atkinson describes the Mouse and the Cursor&Icons 
> system.
> 
> * US 4,466,033 by R. Jordan et al. discusses the Twiggy Disk drives used 
> for the Lisa 1.
> 
> * US 4,926,316 by P. A. Baker describes the Lisa MMU.
> 
> 
> These documents can be downloaded at http://freepatentsonline.com/
> 
ANd of course, one can get them at the US Patent office website,
http://www.uspto.gov/patft

  Michael