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Xerox Alto Source Code - CHM (computerhistory.org) Xerox Alto source code (computerhistory.org) "Hello world" in the BCPL language on the Xerox Alto simulator (righto.com) The Alto in 1974 video; A lecture video of Butler Lampson describing Xerox Alto in depth. (length: 2h45m) A microcode-level Xerox Alto simulator; ContrAlto Xerox Alto emulator
Xerox Alto games (1 P) S. Scientific Data Systems (6 P) Pages in category "Xerox computers" ... Xerox Daybreak; Dynabook; N. Xerox NoteTaker; S.
The ideas led to the development of the Xerox Alto prototype, which was originally called "the interim Dynabook". [8] [9] [10] It embodied all the elements of a graphical user interface, or GUI, as early as 1972. The software component of this research was Smalltalk, which went on to have a life of its own independent of the Dynabook concept.
Diablo Data Systems was a division of Xerox created by the acquisition of Diablo Systems Inc. for US$29 million in 1972, [1] [2] a company that had been founded in 1969 by George E. Comstock, Charles L. Waggoner and others. [3] [4] The company was the first to release a daisy wheel printer, in 1970. Metal Daisy Wheel for Xerox & Diablo printers
By 1973, the Xerox Alto was a fully functional personal computer similar to the NLS terminal which Engelbart had demonstrated in 1968, but much smaller and physically refined. With its mouse-driven GUI , the Alto would go on to influence Steve Jobs and Apple 's Macintosh computer and operating system in the 1980s. [ 23 ]
BravoX was "modeless", as was Gypsy. While Bravo (and BravoX) were originally implemented in BCPL for the Xerox Alto, BravoX was later re-implemented in a language called "Butte" ("a Butte is a small Mesa", as Charles Simonyi used to say). Alto BCPL compiled into Data General Nova machine instructions, which were in turn interpreted by Alto ...
The thirteen bits from the map register plus the remaining nine bits of the virtual address form the address used to access real memory. Access protection is implemented using a separate array of 256 two-bit access control codes, one per virtual page (512 words), indicating a combination of read/write/execute or no access to that page.
In 1973, Xerox PARC developed the Alto personal computer. It had a bitmapped screen, and was the first computer to demonstrate the desktop metaphor and graphical user interface (GUI). It was not a commercial product, but several thousand units were built and were heavily used at PARC, as well as other XEROX offices, and at several universities ...
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