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An Apple /// Circuit Description and ROM Listing
- Subject: An Apple /// Circuit Description and ROM Listing
- From: Patrick Schaefer <PSchaefer@lycosxxl.de>
- Date: Fri, 02 Sep 2005 21:22:40 +0200
- Newsgroups: comp.sys.apple2
- User-agent: Mozilla Thunderbird 0.6 (Windows/20040502)
- Xref: g2news1.google.com comp.sys.apple2:5251
... 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/
Patrick