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  In this chapter we examined five programming language translators. We
  covered the major design issues involved in building an executable program
  that calls subroutines. Figures 20-4, 20-5, and 20-6 summarize some
  characteristics of the language translators we discussed.

  Language                 Default Memory Model
  --------------------------------------------------------------------------
  Interpreted BASIC        Medium
  QuickBASIC               Medium
  Microsoft C              Small
  Turbo Pascal             Large
  --------------------------------------------------------------------------

  Figure 20-4.  Default memory models for several popular programming
  languages.

                           Default Parameter-
  Language                 Passing Method          Parameter Order
  --------------------------------------------------------------------------
  Interpreted BASIC        Reference               Forward
  QuickBASIC               Reference               Forward
  Microsoft C              Value                   Reverse
  Turbo Pascal             (Varies)                Forward
  --------------------------------------------------------------------------

  Figure 20-5.  Parameter-passing conventions for several popular
  programming languages.

  Language                 Registers Used by Language Translator
  --------------------------------------------------------------------------
  Interpreted BASIC        DS, ES, SS, BP
  QuickBASIC               DS, SS, BP, SI, DI
  Microsoft C              DS, SS, BP, SI, DI
  Turbo Pascal             DS, SS, BP
  --------------------------------------------------------------------------

  Figure 20-6.  Register usage conventions followed by several popular
  programming languages. Preserve these registers if you change them in a
  subroutine.

  Even if you never plan to write an assembly-language program or link
  subroutines written in different languages into the same program, we hope
  you've found it interesting to see how these different language
  translators do their work.