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Manpages vga_setlinearaddressingSection: Svgalib User Manual (3)Updated: 27 July 1997 Index Return to Main Contents NAMEvga_setlinearaddressing - switch to linear addressing modeSYNOPSIS#include <vga.h> int vga_setlinearaddressing(void); DESCRIPTIONSwitch to linear addressing mode. This maps all (or most) of the SVGA memory at the position returned by vga_getgraphmem(3) (which will probably change by the call to vga_setlinearaddressing()). The vga_set*page(3) calls are no longer required. This ensures optimal performance, however the drawing functions of svgalib do not support this memory layout and not all cards support it (and not in all modes).Use vga_modeinfo(3) to check for availability of the function in a given mode. Furthermore, some cards (Cirrus) just enable this buffer at a fixed hardware address. For Cirrus it is mapped at 14MB so you should never used it if you have more than 14MB of memory (But how does an application know?). The Mach32 support for this is smarter. It makes this feature only available when it is safe to be used. To avoid all this problems you can use
SEE ALSOsvgalib(7), vgagl(7), libvga.config(5), testlinear(6), vga_modeinfo(3), vga_getgraphmem(3), vga_setpage(3), vga_setreadpage(3), vga_setwritepage(3), vga_setlinearaddressing(3) AUTHORThis 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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