testlinear(6)          Svgalib User Manual          testlinear(6)

       testlinear - tests a linear frame buffer


       Program  to  test linear addressing on Cirrus cards and on
       Mach32 (and other cards which may support it).

       Selects 640x480x256 and tries to  enable  a  linear  frame
       buffer  (its virtual address is printed). Fills the screen
       in some color, then draws pixels in random positions.

       For Cirrus cards some direct hardware access is then  made
       for  highspeed screen access.  Except for the last (Cirrus
       only) test no speeds are printed, but you are  welcome  to
       use  'time'  to  measure  it. The program draws 714400 one
       byte pixels plus a forced  1s  delay  and  various  rand()
       calls for the pixels.

       The  testlinear demo needs a few presses of <Return> after
       each minimal demo step. Even when it does not  prompt  for
       it. When it appears to be stuck, just press <Return>.

       This  demo  is  part  of  svgalib  and can be found in the
       demos/ subdirectory of the original svgalib  distribution.
       However,  it  is  not  installed in the system by default,
       s.t. it is unclear where you can find it if  your  svgalib
       was  installed by some linux distribution. Even then, when
       you have the demo on your system, you probably won't  have
       the sources s.t. it is only of limited use for you.

       In case of any such problem, simply get an svgalib distri-
       bution from the net. You even don't need  to  install  it.
       Just  make  in  the demos/ subdirecty. As of this writing,
       svgalib-1.2.12.tar.gz is the latest  version  and  can  be
       retrieved     by     ftp     from    sunsite.unc.edu    at
       /pub/Linux/libs/graphics     and     tsx-11.mit.edu     at
       /pub/linux/sources/libs  which  will most probably be mir-
       rored by a site close to you.

       svgalib(7),   vgagl(7),    libvga(5),    threed(6),
       accel(6),  bg_test(6),  eventtest(6), forktest(6), fun(6),
       keytest(6),  mousetest(6),  scrolltest(6),   speedtest(6),
       spin(6),  testaccel(6),  testgl(6),  vgatest(6), plane(6),

       This manual page was edited by Michael Weller <eowmob@exp-
       math.uni-essen.de>.  The  exact  source  of the referenced
       demo 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)        29 July 1997                         1