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TopView was a text-mode MS-DOS multitasker written by IBM and released in 1984, together with their new PC AT computer. Microsofts disk operating system, MS-DOS, was Microsofts implementation of DOS, which was the first popular operating system for the IBM PC, and until recently, was widely used on the PC compatible platform. ...
International Business Machines Corporation (IBM, or colloquially, Big Blue) (NYSE: IBM) (incorporated June 15, 1911, in operation since 1888) is headquartered in Armonk, New York, USA. The company manufactures and sells computer hardware, software, and services. ...
1984 is a leap year starting on Sunday of the Gregorian calendar. ...
IBM considered that in order to harness the great power and memory capacity of the new machine (Intel 80286 with a 6 MHz clock and, in version 02, with 512 KB of RAM), some multitasking environment was necessary. TopView allowed IBM to sweeten the deal with customers, who were surprised that the new and very expensive machine did not come with an operating system able to use the hardware multitasking and protected-mode features of the new CPU, and was still running in 8088 emulation mode. However, TopView proved unnecessary to sell the new machines, and was quickly EOL-ed. The Intel 80286 is an x86-family 16-bit microprocessor that was introduced by Intel on February 1, 1982. ...
A megahertz (MHz) is one million (106) hertz, a measure of frequency. ...
This article is about the animal, sheep; for other meanings of Sheep, see Sheep (disambiguation). ...
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In computing, an operating system (OS) is the system software responsible for the direct control and management of hardware and basic system operations. ...
Hardware is equipment such as fasteners, keys, locks, hinges, wire, chains, plumbing supplies, tools, utensils, cutlery and machine parts, especially when they are made of metal. ...
The central processing unit (CPU) is the part of a computer that interprets and carries out the instructions contained in the software. ...
End-of-life is a euphemism used with respect to a retailed product, indicating that a vendor will not be doing the following: marketing, selling, promoting or supporting a particular product. ...
TopView ran in real mode on any x86 processor and could run well-behaved MS-DOS programs in windows. It did not make use of any later introduced virtualization features in the Intel 80386 processors. The title given to this article is incorrect due to technical limitations. ...
In computing, virtualization involves the process of presenting computing resources in ways that users and applications can easily get value out of them, rather than presenting them in a way dictated by their implementation, geographic location, or physical packaging. ...
An Intel 80386 Microprocessor The Intel 80386 is a microprocessor which was used as the central processing unit (CPU) of many personal computers from 1986 until 1994 and later. ...
TopView first introduced PIF files, or Program Information Files, which defined how a given MS-DOS program should be run in a multi-tasking environment, notably to avoid giving it unnecessary resources which could remain available to other programs. TopView's PIF files have been inherited by Microsoft Windows and allegedly by DESQview. Microsoft Windows is a range of closed source proprietary commercial operating environments for personal computers and servers. ...
DESQview was a text mode multitasking program which enjoyed modest popularity in the late 1980s and early 1990s. ...
IBM promised to give TopView a user-friendly GUI, but never did. Gui is a French form of the male name Guy. ...
TopView required MS-DOS 2.x and did not run with 3.0 and later releases any more.
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