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Man Pages


Manual Reference Pages  -  VGA_SETCHIPSET (3)

NAME

vga_setchipset - force chipset

CONTENTS

Synopsis
Description
See Also
Author

SYNOPSIS

#include <vga.h>

void vga_setchipset(int chipset);

DESCRIPTION

Force detection of a chipset (when chipset detection fails). vga_setchipset(VGA) can be useful if the chipset specific stuff or the SVGA detection stuff gives problems.

However, at first the automatic detection should work well, and if not a specific chipset can be forced from /etc/vga/libvga.config.

Because of that, void vga_setchipset(int chipset) should probably never be used by applications. If used nevertheless, it should be called directly before vga_init(3).

As of now the following values are defined for chipset:
UNDEFINED
  This is the default and specifies autodetection.
VGA A plain VGA card, not that the SVGA must behave like an ordinary SVGA card then which will probably mean it is in an ordinary (25x80) textmode.
ET4000 Tseng ET4000/ET4000W32(i/p) cards.
CIRRUS Cirrus Logic GD542x/3x cards.
TVGA8900
  Trident TVGA 8900C/9000 (and possibly also 8800CS/8900A/B) cards.
OAK Oak Technologies OTI-037/67/77/87 cards.
EGA An ordinary EGA card. The notes about VGA apply.
S3 An S3 base card.
ET3000 Tseng ET3000 cards.
MACH32 A card (from ATI or not) based on the ATI Mach32 chipset.
GVGA6400
  A Genoa(?) GVGA6400 card.
ARK ARK Logic ARK1000PV/2000PV cards.
ATI An ATI SVGA (VGA Wonder and friends) card. This does not (necessarily) include the newer cards (usually called Mach something).
ALI An ALI2301 based card.
MACH64 A card using the ATI Mach64 chipset. Support is not complete.
CHIPS Chips and Technologies chipsets 65525, 65535, 65546, 65548, 65550, and 65554 (usually in laptops).

SEE ALSO

svgalib(7), vgagl(7), libvga.config(5), vgatest(6), vga_getcurrentchipset(3), vga_setchipsetandfeatures(3)

AUTHOR

This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The exact source of the referenced function as well as of the original documentation is unknown.

It is very likely that both are at least to some extent are due to Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.

Occasionally this might be wrong. I hereby asked to be excused by the original author and will happily accept any additions or corrections to this first version of the svgalib manual.

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Svgalib (>= 1.2.11) VGA_SETCHIPSET (3) 27 July 1997

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