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Text File  |  1993-03-26  |  7KB  |  124 lines
  1. --------------------------------------------------------------------------------
  2. Release Date | Version | Details
  3. --------------------------------------------------------------------------------
  4. 06/05/93     | 1.00    | Initial release
  5.              |         |
  6. 26/05/93     | 1.01    | Bug fixes:
  7.              |         |
  8.              |         | * Crashed on 386+ machine if EMM386.EXE or
  9.              |         |   equivalent loaded with NOEMS option. No VCPI
  10.              |         |   detected unless EMMXXXX0 device driver available.
  11.              |         |
  12. 10/08/93     | 1.02    | Bug fixes:
  13.              |         |
  14. Internal     |         | * PCX format output incorrectly duplicated the
  15. Release      |         |   last pixel in a scan line.
  16. Only         |         | * Included missing 'Activation Timed Out' message
  17.              |         |   for Last Error (caused by DOS in permanently
  18.              |         |   busy state).
  19.              |         | * Corrected error in horizontal pixel pan handler
  20.              |         |   for 256-colour modes.
  21.              |         | * Changed method of calculating 64K video RAM
  22.              |         |   segment wrap versus paged memory access.
  23.              |         |   This was not a reported bug, as yet. With luck no
  24.              |         |   further bugs have been introduced by this.
  25.              |         |
  26.              |         | Enhancements:
  27.              |         |
  28.              |         | * Added /CLICKS switch at user request.
  29.              |         | * Added extra interrupt 21h trap to avoid excessive
  30.              |         |   DOS busy timeout delays during intensive disk use.
  31.              |         | * Implemented split screen and pixel pan handler for
  32.              |         |   the non-standard 256-colour mode using 4-plane
  33.              |         |   non-chained (interleaved) memory mapping.
  34.              |         | * Base VGA detection (regardless of SuperVGA tests)
  35.              |         |   now overruled by the /V:VGA switch. This allows
  36.              |         |   the user to load SCREEN Thief regardless of video
  37.              |         |   card type and should be used with due caution. 
  38.              |         | * Added 24-bit support for PCX and BMP formats.
  39.              |         | * Added RLE compression for 16 and 256 colour BMPs.
  40.              |         | * Improved BMP creation method. Faster, less noisy.
  41.              |         | * Added /RGB switch for quick x3 Max Width setting.
  42.              |         | * Added /STREAMSIZE switch.
  43.              |         |
  44. 20/08/93     | 1.10    | Bug fixes:
  45.              |         |
  46. Internal     |         | * Non-blinking pixels in 16-colour graphics mode are
  47. Release      |         |   now correctly interpreted with an intense attribute.
  48. Only         |         |
  49.              |         | Enhancements:
  50.              |         |
  51.              |         | * Added support for CIRRUS LOGIC CL-GD5422 chip.
  52.              |         |   Fully tested including HiColor and TrueColor modes.
  53.              |         | * Added TXT, ASC and SCR Output Formats.
  54.              |         | * Expanded TIFF support for 2, 4, 16 and 256 colours.
  55.              |         | * Implemented more exact emulation of the VGA CRT
  56.              |         |   Controller. Now even ridiculous settings such as
  57.              |         |   a non-zero Preset Row Scan value (vertical panning)
  58.              |         |   under graphics modes are simulated.
  59.              |         | * Added /BLINKATTR switch.
  60.              |         | * Added support for OAK 037C/057/067/077 chip sets.
  61.              |         | * Improved command line syntax error reporting.
  62.              |         | * ST now only clears screen when run if already in
  63.              |         |   colour text mode. before it always reset the mode,
  64.              |         |   causing the display to flash on some adapters.
  65.              |         | * Added PgUp, PgDn and first character jump for 
  66.              |         |   scrolling help window list.
  67.              |         | * Status screen updated to include most options.
  68.              |         | * Added /FULLFRAME switch.
  69.              |         | 
  70. 26/09/93     | 1.50    | Enhancements:
  71.              |         | 
  72.              |         | * Implemented LZW compression within TIFF format.
  73.              |         | 
  74. 07/12/93     | 1.55    | Bug fixes:
  75.              |         | 
  76. Limited      |         | * GIF, TXT, ASC and SCR outputs now correctly
  77. Release      |         |   ignore the /RGB switch setting as these do
  78. Only         |         |   do not support 24-bit output and the surplus
  79.              |         |   allocation is simply a waste of memory.
  80.              |         | 
  81.              |         | Enhancements:
  82.              |         | 
  83.              |         | * Substantial changes made to the GIF encoding
  84.              |         |   algorithm. Linked list code searches rather than
  85.              |         |   table searches provide for a greatly improved
  86.              |         |   performance when capturing screens with many,
  87.              |         |   varied colours. Tests have shown improvements
  88.              |         |   of up to 1000% with 256-colour photo images
  89.              |         |   (e.g. 7 seconds not 70!). The down side is an
  90.              |         |   up to 100% increase in capture time for images
  91.              |         |   with few colours or colour changes (e.g. from 3
  92.              |         |   seconds up to 6 seconds) and a 33% increase in
  93.              |         |   memory usage (GIF encoding table entries are now
  94.              |         |   4-byte, not 3-byte). The advantages out-weigh the
  95.              |         |   disadvantages.
  96.              |         | 
  97. 01/03/94     | 1.56    | Bug fixes:
  98.              |         | 
  99.              |         | * Cured significant bug in the video buffer control
  100.              |         |   logic which caused occasional image corruptions
  101.              |         |   when capturing games using scrolling effects.
  102.              |         | * Removed nasty bug introduced with v1.50 where
  103.              |         |   CGA 2 colour mode caused immediate hang.
  104.              |         | * PCX format now correctly sets palette type as 1
  105.              |         |   for 24-bit images.
  106.              |         | * Modified BMP output so that palette information
  107.              |         |   length matches biClrUsed field in all cases.
  108.              |         | 
  109.              |         | Enhancements:
  110.              |         | 
  111.              |         | * Added support for Tseng ET4000 chip set. Fully
  112.              |         |   tested other than 32K/64K colour modes.
  113.              |         | * Added support for S3 86c911 chip set. Fully
  114.              |         |   tested including 640x480x32K mode.
  115.              |         | * Cosmetic changes. Trailing backslash removed from
  116.              |         |   the directory entry on the status screen. Setting
  117.              |         |   directory back to current using single dot name
  118.              |         |   is recognised and redisplays <current>.
  119.              |         | * Added CONFIG.ST file support.
  120.              |         | * Documented hidden diag/dev/service switches.
  121.              |         | 
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