mdw@git.distorted.org.uk Git - ssr/blob - StraySrc/Libraries/Sapphire/sh/screen

   1 ;
   2 ; screen.sh
   3 ;
   4 ; Screen mode information caching
   5 ;
   6 ; © 1994-1998 Straylight
   7 ;
   8
   9 ;----- Licensing note -------------------------------------------------------
  10 ;
  11 ; This file is part of Straylight's Sapphire library.
  12 ;
  13 ; Sapphire is free software; you can redistribute it and/or modify
  14 ; it under the terms of the GNU General Public License as published by
  15 ; the Free Software Foundation; either version 2, or (at your option)
  16 ; any later version.
  17 ;
  18 ; Sapphire is distributed in the hope that it will be useful,
  19 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ; GNU General Public License for more details.
  22 ;
  23 ; You should have received a copy of the GNU General Public License
  24 ; along with Sapphire.  If not, write to the Free Software Foundation,
  25 ; 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26
  27 ;----- Overview -------------------------------------------------------------
  28 ;
  29 ; Functions provided:
  30 ;
  31 ;  screen_getInfo
  32 ;  screen_cache
  33 ;  screen_justChangedMode
  34 ;  screen_init
  35
  36                 [       :LNOT::DEF:screen__dfn
  37                 GBLL    screen__dfn
  38
  39 ; --- screen_getInfo ---
  40 ;
  41 ; On entry:     --
  42 ;
  43 ; On exit:      R0 == pointer to screen information block
  44 ;
  45 ; Use:          This call returns a pointer to a block of information
  46 ;               about the current screen modes.  The format of this block
  47 ;               is defined above.
  48
  49                 IMPORT  screen_getInfo
  50
  51 ; --- screen_cache ---
  52 ;
  53 ; On entry:     R12 points to workspace
  54 ;
  55 ; On exit:      --
  56 ;
  57 ; Use:          Caches screen information for the current mode.
  58
  59                 IMPORT  screen_cache
  60
  61 ; --- screen_justChangedMode ---
  62 ;
  63 ; On entry:     --
  64 ;
  65 ; On exit:      CS if last event was a mode change, CC otherwise
  66 ;
  67 ; Use:          Informs the caller if the last event was a mode change.
  68 ;               The system ignores open window requests when making it's
  69 ;               decision.
  70
  71                 IMPORT  screen_justChangedMode
  72
  73 ; --- screen_init ---
  74 ;
  75 ; On entry:     --
  76 ;
  77 ; On exit:      --
  78 ;
  79 ; Use:          Initialises the screen unit.
  80
  81                 IMPORT  screen_init
  82
  83 ;----- Data offsets ---------------------------------------------------------
  84
  85                 ^       0
  86 screen_xEig     #       4
  87 screen_yEig     #       4
  88 screen_bpp      #       4
  89 screen_width    #       4
  90 screen_height   #       4
  91 screen_dx       #       4
  92 screen_dy       #       4
  93
  94                 ]
  95
  96 ;----- That's all, folks ----------------------------------------------------
  97
  98                 END