Microsoft Macro Assembler  v 1.27                     May. 1984
 
 
 
1.ADDENDUM TO MICROSOFT MACRO ASSEMBLER:
 
  The following describes the differences between Microsoft Macro Assembler
   versions 1.25 and 1.27:
 
    - IFB & IFNB have been corrected
    - Recognizes memory greater than 512K
    - fsubr,  fdiv  &  fdivr   have been corrected

 

2.ADDENDUM TO MICROSOFT LINK:

  The following describes the differences between Microsoft LINK versions
  2.00 & 2.44:

  A.Now allows for up to 1000 segments to be linked together
 

  B.MS-LINK SWITCHES ADDENDUM (Page 2-11)

    /NO  -  should be changed to   /NOD    (NODEFAULTLIBRARYSEARCH)
 
    /NOGROUPASSOCIATION - Overrides the standard Group Association.
        This is documented for Historical Purposes only, users of 
        Microsoft Macro Assembler should not have any reason to use it.
           
    /NOIGNORECASE  -  By default, "FOO", "foo", and "Foo" are treated
         by the linker as being equivalent.  If /NOIGNORECASE is
         specified, then they are all different symbols.

    /CPARMAXALLOC:NNNN  -  By default, the cparMaxAlloc field(at offset
        #0C) in the EXE header(see chapter 5 in the MS-DOS Programmer's
        Reference) is set to 65535.  This switch allows you to set the
        value to any number between 1 and 65535;  if the value you specify
        is less than the computed value of cparMinAlloc, the linker will
        use the value of cparMinAlloc(at offset #0A) instead.  If you 
        are running programs under MS-DOS 1.25, you should not use the
        switch.

    /OVERLAYINTERRUPT:NNNN  -  By default, the interrupt number used for
        passing control to overlays is CD hexadecimal.  The overlay
        interrupt switch allows the user to select a different interrupt
        number.   NNNN can be any of the following:
 
        -  A decimal number from 0 to 255(numbers that conflict with
           MS-DOS interrupts are not prevented, but their use is
           indivisable).
        -  An octal number from 0 to 377.  A number is interpreted
           as octal if it starts with a zero,  e.g., 10 is 10 decimal
           but 010 is 8 decimal.
        -  A hexadecimal number from 0 to FF.  A number is interpreted
           as hexadecimal if it starts with "0x".  Thus, 10 is decimal
           ten, 010 is 8 decimal, and   0x10 is 16 decimal.

 

3.ADDENDUM TO MICROSOFT LIB:

  The following describes the differences between Microsoft LIB
  Versions 2.00 & 2.20:


  A.Summary of Enhancements to the Microsoft Library Manager:

   o   The contents of one library file may be added to another simply by
       specifying the library file name as the argument to the addition
       operator ("+").  Make sure to use the '.LIB' extension or LIB 
       Lib will look for a file with '.OBJ' extension instead.

   o   The internal page size is variable;  thus, the amount of wasted
       space inside libraries can be reduced.

   o   The user may specify a name other than the original name for  
       modified library.  The primary benefit of this feature is that 
       the user may place the modified library on a different disk drive
       than the original library.

   o   If the original name is to be used for a modified library, then
       the old version is saved under the same name, except that its 
       extension is replaced with ".BAK".  Thus, if an error occurs
       during operations on an existing library, the user can recover.

   o   The user is no longer limited to a maximum of 1000 public symbols
       within a single library.  The maximum is now on the order of 3000
       to 9000 symbols depending upon whether symbols average more or
       less than 9 characters in length.

   o   New operators have been defined, thus simplifying replacement,
       extraction and deletion of modules.
 


  B.The format of the Library Command Line (from MS-LIB Manual -
    Page 2-3) is:

   LIB <library file><page size switch><operations>,<list file>,<new library>

     where:
      <library file> - is the DOS file name of a library file
      <pagesize switch>  - (NEW FEATURE) is an optional switch of the form:
            "/pagesize:N", where N equals 2**n  and 4 <= n <=15.
               - If you are using the Command Prompt or a Response File,
                 the "/pagesize:N" switch should be placed immediately
                 after the <library file>.
               - The default for the pagesize switch is 512 if the library 
                 is being created, or the current page size, if the 
                 library is being modified.
      <operations>   - is a list of actions to perform
      <list file>    - is a DOS file name where a cross-reference 
             listing will be placed
      <new library>  -  (NEW FEATURE) is the DOS file name of a library
           file to create with the modifications specified by the operations
            or the page size switch or both.
               - The default for  <new library> is the original library
                 file name(the original will be renamed with an extension
                 of .bak instead of .lib)


  C.The following Command Characters (Operators) have been added and ar
    recognized by the Library Manager (MS-LIB Manual Pages 2-9 through 2-11):

    -+  Replace an object module with the contents of the object file of 
        the same name (plus ".OBJ")
    -*  Delete an object module and at the same time extract it

    for example:
      To replace HEAH in the library with a newer version, the user would
      type:
           LIB PASCAL -+ HEAH;