Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!uakari.primate.wisc.edu!ginosko!uunet!mitel!sce!cognos!alzabo!tris From: tris@alzabo.uucp (Tris Orendorff) Newsgroups: comp.graphics Subject: Re: VGA Graphics Message-ID: <1989Sep27.124145.29732@alzabo.uucp> Date: 27 Sep 89 12:41:45 GMT References: <216@uwm.edu> Lines: 33 jrn@csd4.csd.uwm.edu (James Ray Norton) writes: >Hi, >I have a slight problem.... >I am trying to write a program using Turbo Pascal Version 5. This program is >supposed to save a graphics image (VGA 640 x 480) to the disk and later reload >the image back to the display... >I have written a routine that will save the image (tested it by putting the >image back on the screen)...However my routine to load the image file to >the screen will not work... The VGA video buffer in VGA 640 x 480 is arranged as four bitplanes. You will have to read the video buffer four times, taking one plane at a time. I suggest that you get the following book: Programmer's Guide to PC and PS/2 Video Systems Richard Wilton Microsoft Press ISBN 1-55615-103-9 Another alternative is to use a screen capture program to save your image in one of the normal formats (PCX, PIC, LBM, GIF). -- Sincerely Yours Tris Orendorff .......................................................................