Apple.
As part of the Apple Lisa’s 40th birthday celebration, the Computer History Museum has released the source code for Lisa OS version 3.1 under the Apple Academic License Agreement. Courtesy of Apple, Pascal’s source code is now available for download from his website at CHM after filling out a form.
The Lisa Office System 3.1 dates back to April 1984 in the early Mac days and was today’s Lisa equivalent to operating systems such as macOS and Windows.
The entire source package weighs about 26 MB and consists of over 1,300 commented source files, neatly arranged in subfolders representing the code for the main Lisa OS, the various included apps, and the Lisa Toolkit development system. split.
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An excerpt from the Apple Lisa OS 3.1 “Twiggy” floppy driver written in Pascal.
apple
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An excerpt from the Apple Lisa OS 3.1 “Twiggy” floppy driver written in Pascal.
apple
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An excerpt from the Apple Lisa OS 3.1 “Twiggy” floppy driver written in Pascal.
apple
First released on January 19, 1983, the Apple Lisa remains an influential and important machine in Apple’s history, pioneering the mouse-based graphical user interface (GUI) that was adopted for the Macintosh a year later. have become. Despite its innovation, Lisa’s high price ($9,995 retail, currently around $30,300) and lack of application support hampered its position as a platform. A year after its launch, the Macintosh with similar features has slashed its price significantly. Apple announced his major revision of the Lisa hardware in 1984 and then retired the platform in 1985.
Screenshot of the Apple Lisa Office System.
The Lisa wasn’t the first commercial computer with a GUI, as some have claimed in the past. That honor is attributed to her Xerox Star. However, Lisa OS offers drag-and-drop icons, moveable windows, trash can, menu bar, pull-down menus, copy-paste shortcuts, control panel, overlapping windows, and even one-touch automatic system shutdown.
The LisaOS source release enables researchers and educators to study how Apple developers implemented historically significant features 40 years ago. Apple’s Academic License permits you to use and compile the Source Code “For Non-Commercial, Academic Research, Educational Instruction, and Personal Learning Purposes Only.”
The Computer History Museum had previously hinted at releasing the code in 2018, but after spending time reviewing it, decided to delay the release until the computer’s 40th birthday. The perfect gift to honor the legacy of this important machine.
