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- NAME
- vgasync - Keep VGA sync polarities negative
-
- SYNOPSIS
- detach vgasync
-
- DESCRIPTION
- 'vgasync' runs as a background process under OS/2 and periodically
- (re)sets the horizontal and vertical sync polarities of an (S)VGA card to
- negative sync.
-
- Many (all?) SVGA cards change the polarities of the H and V sync
- signals to indicate to an assumed multisync monitor the current video mode
- (and implied scan frequencies). 'vgasync' allows older fixed-frequency
- monitors that require a fixed sync polarity to be used with such SVGA
- cards without requiring hardware modification of the sync signals. With
- the addition of manual sync controls on the monitor and/or a means (eg.
- software drivers) of tweaking the VGA CRT control registers, a "fixed
- frequency" monitor can then display most of the SVGA extended video modes.
-
- This program requires IOPL to run.
-