Version History of Microsoft QuickBasic for MS-DOS (39730)

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Version Number      5.25-Inch Release      3.5-Inch Release

   1.00                08/18/85               none

      First release.

   1.01                January 1986           none

      Corrects problems known in Version 1.00. No major enhancements.
      Few copies of Version 1.01 were shipped due to a problem
      discovered with compiling medium-sized programs.

   1.02                02/06/86               05/07/86

      Corrects problems known in Version 1.01. No major enhancements.

   2.00                09/29/86               08/15/86

      Major release. The following new features are added:

         Built-in editor environment
         Support for dynamic numeric arrays using far heap (up to 64K
         each)
         Multiline block IF..THEN..ELSE..ENDIF statements
         EGA graphics card support
         BLOAD/BSAVE statements

   2.01                01/20/87               02/02/87

      Corrects problems discovered in Version 2.00. Addition of
      keyboard driver for Tandy 1000 and IBM EXTENDED keyboard.

   3.00                04/13/87               04/13/87

      Major release. Comes with QB.EXE and QB87.EXE. The QB87.EXE
      program supports the math coprocessor. The following additional
      new language statements are added:

         SELECT CASE
         DO LOOP
         CONST

      The editor includes insert/overtype mode command. You can use
      the editor with SuperKey, Prokey, or Sidekick. Other features
      include a simple debugger to set breakpoints and watch
      variables. The editor can take advantage of 43-line mode on the
      Enhanced Graphics Adapter (EGA) card.

   4.00                10/10/87               10/10/87

      Major release. Introduction of threaded p-code technology, which
      error-checks lines when typed and runs programs almost instantly
      in the editor environment. You can load multiple modules within
      the editing environment.

      The following new features are added:

         Hercules graphics support
         Recursive SUBprogram procedures
         User-defined TYPE variables (TYPE...END TYPE)
         Huge dynamic arrays (larger than 64K)
         Fixed-length strings
         CALLs to high-level languages (Microsoft C, FORTRAN, Pascal)

      Enhanced debugger in editor allows setting breakpoints, watch
      points, and watch variables, plus MS CodeView compatibility. New
      on-line help for Basic syntax.

   4.00a               02/20/88               02/20/88

      QuickBasic Version 4.00a was released with the Microsoft Basic
      Compiler Version 6.00. Version 4.00a provided corrections to
      problems discovered in Version 4.00. QuickBasic Version 4.00a
      was never sold as a product separate from the Microsoft Basic
      Compiler 6.00.

   4.00b               05-05-88               06/01/88

      Version 4.00b is almost the same as Version 4.00a, except some
      memory-management and data-communications problems in Version
      4.00a (and Version 4.00) are corrected. Version 4.00b is
      enhanced to support the AT&T and Olivetti high-resolution
      screens. (A copy of QuickBasic Version 4.00b is also distributed
      with the Microsoft Basic Compiler Version 6.00b package.)

   4.50                10/21/88               10/21/88

      New user interface with complete context-sensitive help that
      contains the entire language reference manual. On-line help
      system also contains examples that can be cut and pasted
      directly into programs. 4.50 provides corrections for some
      problems discovered in Version 4.00b.