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GeezerVison is showing en.wikipedia.org — PC System Design Guide - Wikipedia
The PC System Design Guide (also known as the PC-97, PC-98, PC-99, or PC 2001 specification) is a series of hardware design requirements and recommendations for IBM PC compatible personal computers, compiled by Microsoft and Intel Corporation during 1997–2001. They were aimed at helping manufacturers provide hardware that made the best use of the capabilities of the Microsoft Windows operating system, and to simplify setup and use of such computers. Every part of a standard computer and the most common kinds of peripheral devices are defined with specific requirements. Systems and devices that meet the specification should be automatically recognized and configured by the operating system. VersionsFour versions of the PC System Design Guide were released. The book Hardware Design Guide for Microsoft Windows 95 was a predecessor to the PC System Design Guide. Unlike the PC System Design Guide, Hardware Design Guide for Microsoft Windows 95 only focused IBM PC Compatables and Windows 95.[1] In PC-97, a distinction was made between the requirements of a Basic PC, a Workstation PC and an Entertainment PC. In PC-98, the Mobile PC was added as a category. In PC 2001, the Entertainment PC was dropped.
Hardware Design Guide for Microsoft Windows 95Aimed at systems running Windows 95. Required[1.1]:
It was published as ISBN 1556156421, 978-1556156427. PC-97Required:
Initial version.
PC-98Not to be confused with NEC PC-9801.
Aimed at systems to be used with Windows 98 or Windows 2000. Required:
It was published as ISBN 1-57231-716-7. PC-99Required:
Strongly discouraged:
It was published as ISBN 0-7356-0518-1. PC 2001Required:
Final version. First to require IO-APICs to be enabled on all desktop systems. Places a greatly increased emphasis on legacy-reduced and legacy-free systems. Some "legacy" items such as ISA expansion slots and device dependence on MS-DOS are forbidden entirely, while others are merely strongly discouraged.[2] PC 2001 removes compatibility for the A20 line: "If A20M# generation logic is still present in the system, this logic must be terminated such that software writes to I/O port 92, bit 1, do not result in A20M# being asserted to the processor."[3] Color-coding scheme for connectors and ports  Color-coded PS/2 ports and PS/2 dualport   Perhaps the most end-user visible and lasting impact of PC 99 was that it introduced a color code for the various standard types of plugs and connectors used on PCs.[4] As many of the connectors look similar, particularly to a novice PC user, this provided another visual aid to make it easier for people to connect peripherals to the correct ports on a PC. This color code was gradually adopted by almost all PC and motherboard manufacturers. Some of the color codes have also been widely adopted by peripheral manufacturers. Unofficial extensions
IconsAnother long lasting inpact of the PC System Design Guide is that it recommended a set of icons that were created by Microsoft. These icons first appeared in the Hardware Design Guide for Microsoft Windows 95.[1.2] While the use of these icons were not required, they became de facto standard.[5][6] This icon set was later officially extended by Hewlett-Packard and unofficially others. Hewlett-Packard's official extensions Unofficial extensions IEC 60417, unrelated to the PC System Design Guide
Front panel LEDsThese front panel LEDs are usually used on the PC System Design Guide[7]:
See also
References
External links
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