Multisync monitor: Difference between revisions

Revision as of 01:54, 15 February 2016

Revision as of 07:56, 15 February 2016

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# [[SVGA]]: 31 kHz - 100 kHz+ horizontal scan, 50 Hz - 120 Hz+ vertical scan

With the introduction of SVGA, multiscan monitors became standard for personal computers, supporting a range of resolutions and refresh rates. A typical screen resolution of the late 1990s was 1024x768 at 85&nbsp;Hz <!-- need to find archived personal computer manufacturer product listings and web browser statistics for citation -->, requiring a horizontal scan rate over 85&nbsp;kHz,<ref>{{cite web|title=Modeline Calculator|url=http://www.arachnoid.com/modelines/}}</ref> yet during system boot the [[Power-on self-test|POST]] display and [[operating system]] splash screen would be displayed at the standard VGA 31&nbsp;kHz. Many [[MS-DOS]] and [[Windows]] computer games of the time would also switch to a lower resolution for greater compatibility, more colours, improved performance or to reduce the [[video memory]] required by the [[frame buffer]].

Depending on the design of the monitor, there may be several discrete frequencies supported. For example, a monitor designed for use with CGA, EGA and VGA standards could elect to support 15&nbsp;kHz, 23&nbsp;kHz and 31&nbsp;kHz horizontal scan rates. Alternatively, the monitor may be designed to support a continuous range from 15&nbsp;kHz to 31&nbsp;kHz. <!-- links to product manuals for old multisyncs would be useful here, or usenet -->