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    SS  SS   tt           ll   ll
    SS     tttttt  eeee   ll   ll   aaaa
     SSSS    tt   ee  ee  ll   ll      aa
        SS   tt   eeeeee  ll   ll   aaaaa  --  "An Atari 2600 VCS Emulator"
    SS  SS   tt   ee      ll   ll  aa  aa
     SSSS     ttt  eeeee llll llll  aaaaa

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                               Release History
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1.0 to 1.1: (February 26, 1999)

  * DOS and Linux versions support real Atari 2600 paddles using a 
    special PC game port adaptor

  * Linux version uses the new 1.2.x joystick driver API

  * Added support for the "-display" option to the X Window version

  * Added support for private colormaps to the X Window version

  * Fixed a few bugs in the Supercharger emulation

    - A major bug in the ROM loading routine was fixed

    - Multi-loading in "Escape from the Mindmaster" works correctly

    - All Supercharger games load and execute at this point

  * Added a small hack to the TIA code to fix a display problem in "Escape 
    from the Mindmaster"

  * Improved TIA emulation to support the RESPx multi-sprite trick

1.0b1 to 1.0: (October 7, 1998)

  * DOS version supports 320x200 and 320x240 graphics modes

  * Several portability issues have been resolved 

  * Preliminary support for Chris Wilkson's Megacart bank-switching scheme

  * BSDI target included in makefile 

  * Improved Users Manual in several "popular" formats

0.7 to 1.0b1: (July 25, 1998)

  * Supports the following controllers:

      Joysticks, Paddles, Booster-Grip, Keyboard and Driving

  * Supports the following bank switching methods:

      2K, 3F, 4K, AR, E0, E7, F4SC, F6, F8, F8SC, FASC, FE

  * Properties are associated with games using their MD5 checksum
    calculated on the entire ROM image

  * Uses the new 'stella.pro' file format for game properties

  * Includes Erik's latest stella.pro properties file

  * New frame rate throttle code for X windows GUI

  * Based on the new and improved M6502 CPU emulation

  * Improvements to TIA emulation

    - Support HMOVE blanks

    - Improved Cosmic Ark star field effect

    - Some support for the RESPx multiple sprite trick

    - Support NTSC and PAL palettes

  * Improvements to PIA emulation (timing)

  * Improved Supercharger emulation

0.6 to 0.7: (June 7, 1997)

  * Improved emulation speed of TIA and 6507

  * Added Starpath Supercharger support

  * Added Tigervision bank-switching support (3F bank-switching)

  * Added pause game feature for Unix and DOS

  * VCS files combined into a single builtin property file

  * Added TIA HMOVE "feature" to support Cosmic Ark stars

  * Improved TIA VSYNC code so that it works more like the real
    thing (0.6 VSYNC code caused the graphics of some games to
    be off such as Alien and Battle Zone)

  * Added two 6507 emulators: one is designed to act more like
    the real thing, while the other is designed to be as fast as
    possible (required for Supercharger support)

  * Changed TIA peeking so lower nibble of byte read is the same
    as the TIA address being accessed (Warlords now works)
  
0.5 to 0.6: (January 18, 1997)

  * Fixed collision detection problem (Freeway works)

  * Changed PIA timing code to fix screen jitters

  * Added new bank-switching methods: F4SC (Fatal Run), E7 (Burgertime)

  * Fixed some code in the TIA emulation that caused SEGFAULTS

  * Improved frame rate throttling code to work better on fast machines

  * Improved TIA emulation (missle graphics are fully emulated now)

  * Included Bob Colbert's "Okie Dokie" game

  * Uses version 1.1 of the TIA Sound library by Ron Fries

0.4 to 0.5: (November 17, 1996)

  * Added sound support

  * Added new bank-switching methods: F8SC (Defender II), FASC (CBS RAM+)

  * Changed TIA so peeking $E and $F return $F not $0 for Haunted House

  * Changed PIA timing code to fix screen jitters in Frogger

  * Addressing scheme rewritten

  * Optimized 6507 memory accesses

  * Randomized memory in PIA upon startup

  * Removed auto-disabling of objects at the start of a frame
    so you can't walk through walls in Adventure

  * Changed the X windows terminal update method to make it faster and
    easier to understand

0.3 to 0.4 (August 28, 1996):

  * TIA code has been optimized some

  * Some games can be played with just a ROM image

  * New search method for ROM images (no more STELLA_PATH)

  * Delta screen update supported

  * Better error handling added to the "core"

0.2 to 0.3 (July 12, 1996):

  * Keyboard joystick support is much better (Daniel Marks)

  * Paddles are now supported via the mouse (Bradford Mott)

  * Many portability issues have been resolved (Keith Wilkins)

  * Fixed a problem with the 6507 ADC and SBC instructions that caused
    some games (Enduro) not to work correctly (Bradford Mott)

  * Power Macintosh port (Aaron Giles)

  * Windows 95 & NT port (Jeff Miller)