graph_mem man page on Peanut

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vga_getgraphmem(3)	      Svgalib User Manual	    vga_getgraphmem(3)

NAME
       vga_getgraphmem - returns the address of the VGA memory

SYNOPSIS
       #include <vga.h>

       unsigned char *graph_mem; /* This declaration is already in vga.h */

       unsigned char *vga_getgraphmem(void);

DESCRIPTION
       returns	a pointer to the 64K VGA frame buffer window.  vga_setpage(3),
       vga_setreadpage(3) and vga_setwritepage(3) allow to select  which  page
       of  the	VGA  memory  shows up at this position.	 vga_setlinearaddress‐
       ing(3) maps all VGA memory at a consecutive memory area (if  the	 hard‐
       ware  supports  it).   In  this mode, vga_getgraphmem() will return the
       location of this area too. You can  also	 access	 the  global  variable
       graph_mem, which will also contain this address.

       Most  demos,  esp.  vgatest(6) show the simple direct use of this func‐
       tion to access screen memory.

SEE ALSO
       svgalib(7), vgatest(6),	fun(6),	 testlinear(6),	 vga_setlinearaddress‐
       ing(3),	vga_claimvideomemory(3),  vga_getmodeinfo(3),  vga_setpage(3),
       vga_setreadpage(3), vga_setwritepage(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.

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