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It’s comprised of houses once populated by mannequins and stocked with packaged goods. Code-named Apple II, the test was part of Operation Teapot and took place at Yucca Flats on the Nevada Proving Grounds (now the Nevada National Security Site). Grant from the Getty Foundation to fund a historic structures report at the house. An interior restoration program was begun parallel to the structural stabilization effort and carpets, interior doors, and tiles were conserved.
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This technique requires careful and precise timing, rendering it difficult to display moving graphics while sound is playing. As you can see from the above video, not many houses made it through the blast. We took a closer look at two of the houses that survived and a tiny bit of history in the story above. While the history here is fascinating, it’s a bit alarming to think of the impact this had and is having on surrounding towns. Apple DOS was superseded by ProDOS, which supported a hierarchical filesystem and larger storage devices. With an optional third-party Z80-based expansion card,[38] the Apple II could boot into the CP/M operating system and run WordStar, dBase II, and other CP/M software.
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Cohen has made a career of examining, authenticating and refurbishing Apple-1 units for auction houses and others and was called in by John Moran to do the same. The first 1,000 or so Apple IIs shipped in 1977 with a 68-page mimeographed "Apple II Mini Manual", hand-bound with brass paper fasteners. This was the basis for the Apple II Reference Manual, which became known as the Red Book for its red cover, published in January 1978. All existing customers who sent in their warranty cards were sent free copies of the Red Book. The Apple II Reference Manual contained the complete schematic of the entire computer's circuitry, and a complete source listing of the "Monitor" ROM firmware that served as the machine's BIOS. The Apple II (stylized as apple ][) is an early personal computer that was created by Apple Inc.
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With the release of MousePaint in 1984 and the Apple IIGS in 1986, the platform took on the look of the Macintosh user interface, including a mouse. The original Apple II came with an 8 KiB ROM containing a BASIC variant called Integer BASIC as well as a resident monitor called the Apple System Monitor. Initially, only cassette tape was available for storage, which was considered too slow and unreliable for business use. In late 1977, Apple began to develop the Disk II floppy disk drive and required an operating system to utilize it. A single HGR page occupied 8 KiB of RAM; in practice this meant that the user had to have at least 12 KiB of total RAM to use HGR mode and 20 KiB to use two pages.
The estimates are not unfounded; an operational unit was sold for $905,000 by Bonhams auction house in 2014. The Soviet Union radio-electronics industry designed Apple II-compatible computer Agat. Roughly 12,000 Agat 7 and 9 models were produced and they were widely used in Soviet schools.[39] Agat 9 computers could run "Apple II" compatibility and native modes. "Apple II" mode allowed to run a wider variety of (presumably pirated) Apple II software, but at the expense of less RAM.
APPLE II HOUSE NEVADA TEST & TRAINING RANGE 2012
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The Apple II PCB lacks any means of generating an interrupt request, although expansion cards may generate one. Program code had to stop everything to perform any I/O task; like many of the computer's other idiosyncrasies, this was due to cost reasons and Steve Wozniak assuming interrupts were not needed for gaming or using the computer as a teaching tool. A fusion of 1930s International Style and 1960s California Modernism, the Neutra VDL Research House II was designed to demonstrate the possibilities of contemporary building materials and the idea of connecting interior space with the exterior environment. The building was first constructed in 1932, designed by the famed architect Richard Neutra, and was partially financed by Dutch industrialist C.H. The Byte Shop, a Bay Area computer store, commissioned the nascent company to build 50 Apple-1 units, and upon delivery the owner was “a bit taken aback,” Isaacson wrote. Apple-1s, as assembled by Wozniak and Jobs, were sold mostly as bare-bones boards and did not include screens, keyboards or cases, far from the polished metal-and-glass Apple products sold today.
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Early Apple IIs were often sold with a Sup'R'Mod, which allowed the composite video signal to be viewed in a television. Apple added vent holes to the case within three months of production; customers with the original case could have them replaced at no charge. He previously wrote for the USA Today network of newspapers including the Ventura County Star, where he covered the Thomas and Woolsey wildfires and the Borderline mass shooting, the Spectrum & Daily News in Utah and the Lansing State Journal in Michigan.
Original Apple IIs had jumper switches to adjust RAM size, and RAM configurations could be 4, 8, 12, 16, 20, 24, 32, 36, or 48 KiB. The three smallest memory configurations used 4kx1 DRAMs, with larger ones using 16kx1 DRAMs, or mix of 4-kilobyte and 16-kilobyte banks (the chips in any one bank have to be the same size). The early Apple II+ models retained this feature, but after a drop in DRAM prices, Apple redesigned the circuit boards without the jumpers, so that only 16kx1 chips were supported. A few months later, they started shipping all machines with a full 48 KiB complement of DRAM. The coarse, low-resolution graphics display mode works differently, as it can output a pattern of dots per pixel to offer more color options. These patterns are stored in the character generator ROM, and replace the text character bit patterns when the computer is switched to low-res graphics mode.
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Partially destroyed in a fire in 1963, the house was rebuilt by the architect and his son, Dion, as a reworking of the original design and the modern architectural principles it represented. In 1990, the property was taken over by California Polytechnic Pomona University pursuant to a 1979 agreement to make the building accessible to the public and to maintain it in perpetuity. The house has since been utilized by the university as a classroom for courses and seminars, and is open as a visitor’s center for Neutra enthusiasts. In 2000, when the house was placed on the World Monuments Watch, California Polytechnic Pomona University was working to secure funds to restore the building. Just about anywhere you go in Nevada, there’s an abandoned town worth exploring — businesses, homes, shells of old cars. While most of these aging relics are captivating reminders of Nevada’s earliest years, one abandoned town in Nevada is beyond incredibly eerie.
The wood-frame house has a side-facing gable roof with clapboard siding over diagonal sheathing. The 29-kiloton Apple II test occurred on 5 May 1955; the house stood within 8,000 feet of ground zero. Although the building appears to be in relatively good condition, damage from the blast is clearly visible. The windows were blown out and the upper portion of the brick chimney has shifted slightly. Nearby is another house built for Apple II, identical in form except for its brick veneer.
The text mode and low-res graphics mode use the same memory region and the same circuitry is used for both. Color on the Apple II series uses a quirk of the NTSC television signal standard, which made color display relatively easy and inexpensive to implement. Color was added later by adding a 3.58-megahertz subcarrier signal that was partially ignored by black-and-white TV sets. Color is encoded based on the phase of this signal in relation to a reference color burst signal.
One popular hack involved connecting a teletype machine to the cassette output. Rather than a dedicated sound-synthesis chip, the Apple II contains a toggle circuit that can only emit a click through a built-in speaker or a line-out jack. More complex sounds, such as music or audio samples, are generated by software manually toggling the speaker at an appropriate frequency.
SAH Archipedia tells the story of the United States through its buildings, landscapes, and cities. This freely available resource empowers the public with authoritative knowledge that deepens their understanding and appreciation of the built environment. When the Apple II initially shipped in June 1977, no expansion cards were available for the slots. This meant that the user did not have any way of connecting a modem or a printer.
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