flynn@shillelagh.cse.nd.edu (Patrick J. Flynn) (04/13/91)
In article <492@rosie.NeXT.COM>, jgraves@next.com (John Graves) writes: > >The file /usr/include/nextdev/video.h defines the number of visible pixels in a > horizontal line and the size of a horizontal line in VRAM (1120 and 1152, > respectively). > Similarly, there are 832 visible vertical lines, but physically 910 fit into VRAM. Hmm. Script started on Fri Apr 12 14:01:08 1991 1csh>dc 10 k 1120 1152 / 832 910 / * p q .8888888887 3csh>^D script done on Fri Apr 12 14:01:53 1991 So what does NextStep do (if anything) with the 1/9 of VRAM that won't fit on the screen? I hate to see memory go to waste ;-) -- Patrick J. Flynn, CompSci&Engg, UnivNotreDame, flynn@cse.nd.edu ('til 7/1)
mikem@uhccux.uhcc.Hawaii.Edu (Mike Morton) (04/14/91)
Patrick Flynn wrote: >So what does NextStep do (if anything) with the 1/9 of VRAM that won't fit >on the screen? I hate to see memory go to waste ;-) The same problem comes up for the Macintosh, where variable screen depth means that as much as 7/8 or more of your VRAM may be unused. Anyone want to figure out a way to use this memory on either machine as a secondary disk cache? Then you could call it a "videodisk" ;-) -- Mike Morton // P.O. Box 11299, Honolulu, HI 96828, (808) 676-6966 HST Internet: mikem@uhccux.uhcc.hawaii.edu (anagrams): Mr. Machine Tool; Ethical Mormon; Chosen Immortal; etc.
userCONK@mts.ucs.UAlberta.CA (Kenny Leung) (04/17/91)
In article <12453@uhccux.uhcc.Hawaii.Edu>, mikem@uhccux.uhcc.Hawaii.Edu (Mike Morton) writes: >Patrick Flynn wrote: >>So what does NextStep do (if anything) with the 1/9 of VRAM that won't fit >>on the screen? I hate to see memory go to waste ;-) > >The same problem comes up for the Macintosh, where variable screen depth >means that as much as 7/8 or more of your VRAM may be unused. > >Anyone want to figure out a way to use this memory on either machine as >a secondary disk cache? Then you could call it a "videodisk" ;-) > > -- Mike Morton // P.O. Box 11299, Honolulu, HI 96828, (808) 676-6966 HST > Internet: mikem@uhccux.uhcc.hawaii.edu > (anagrams): Mr. Machine Tool; Ethical Mormon; Chosen Immortal; etc. The extra memory is probably used for imaging things off screen and then moving them on-screen. This is used to give the illu- sion of better performance. Ever wonder where the pictures are being imaged when Writenow or some other application displays a box labelled "Imaging Graphic"? #! r