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  Syntax:   [name] [S]BYTE initializer [, initializer]...
 
            [name] [S]WORD initializer [, initializer]...
 
            [name] [S]DWORD initializer [, initializer]...
 
            [name] FWORD initializer [, initializer]...
 
            [name] QWORD initializer [, initializer]...
 
            [name] TBYTE initializer [, initializer]...
 
            [name] REAL4 initializer [, initializer]...
 
            [name] REAL8 initializer [, initializer]...
 
            [name] REAL10 initializer [, initializer]...
 
  Description:
 
                            Integer
    Type    Abbr  Size      Range        Types Allowed
  ┌───────┬─────┬─────────┬────────────┬──────────────────────────────────┐
  │ BYTE  │ DB  │ 1 byte  │ -128 to    │ Character, String                │
  │       │     │         │ +255       │                                  │
  ├───────┼─────┼─────────┼────────────┼──────────────────────────────────┤
  │ WORD  │ DW  │ 2 bytes │ -32,768 to │ 16-bit near ptr, 2 characters,   │
  │       │     │         │ +65,535    │ double-byte character            │
  ├───────┼─────┼─────────┼────────────┼──────────────────────────────────┤
  │ DWORD │ DD  │ 4 bytes │ -2Gig to   │ 16-bit far ptr, 32-bit near ptr, │
  │       │     │         │ +4Gig-1    │ 32-bit long word                 │
  ├───────┼─────┼─────────┼────────────┼──────────────────────────────────┤
  │ FWORD │ DF  │ 6 bytes │    ──      │ 32-bit far pointer               │
  ├───────┼─────┼─────────┼────────────┼──────────────────────────────────┤
  │ QWORD │ DQ  │ 8 bytes │    ──      │ 64-bit long word                 │
  ├───────┼─────┼─────────┼────────────┼──────────────────────────────────┤
  │ TBYTE │ DT  │10 bytes │    ──      │ BCD, 10-byte binary numbers      │
  └───────┴─────┴─────────┴────────────┴──────────────────────────────────┘
  ┌───────┬─────┬─────────┬────────────┬──────────────────────────────────┐
  │ REAL4 │ DD  │ 4 bytes │    ──      │ Single-precision floating point  │
  ├───────┼─────┼─────────┼────────────┼──────────────────────────────────┤
  │ REAL8 │ DQ  │ 8 bytes │    ──      │ Double-precision floating point  │
  ├───────┼─────┼─────────┼────────────┼──────────────────────────────────┤
  │ REAL10│ DT  │10 bytes │    ──      │ 10-byte floating point           │
  └───────┴─────┴─────────┴────────────┴──────────────────────────────────┘
 
     These directives allocate and optionally initialize one or
     more bytes of global data. The S prefix indicates signed data,
     but this information is used internally by the assembler for
     comparisons used by control-flow directives and
     argument passing in INVOKE statements. CodeView also uses this
     information to specify the data format.
 
     The abbreviations (such as DB, DD) are limited forms of the
     data-declaration directives; they cannot be used as types. They
     are included for compatibility with previous versions of the
     assembler.
 
     String initializers, available with the BYTE directive, allocate
     a byte for each character of the string. The characters are stored
     with the leftmost character in the lowest memory location so that
 
          BYTE   "WASHINGTON"
 
     would be assembled to
 
          57 41 53 48 49 4E 47 54 4F 4E    "WASHINGTON"
 
     Character initializers, however, are stored with the leftmost
     character in the highest memory location. They are also limited
     to the current expression size so that under the default
     OPTION EXPR32
 
          DWORD        "WASH"
 
     would be assembled to
 
          48 53 41 57  "HSAW"
 
     and under OPTION EXPR16
 
          WORD         "WA"
 
     would be assembled to
 
          41 57        "AW"
 
     Use the REAL4, REAL8, and REAL10 data types for floating-point
     data. They inform CodeView that the data is in floating-point
     format and cause the assembler to perform more stringent type
     checking.
 
     Parameter    Description
 
     name         Symbol name assigned to the variable. If no name is
                  assigned, the memory space is allocated, but the
                  starting address of the variable has no symbolic
                  name.
 
     initializer  A type shown in the table above, constant integer
                  expression, ?, or DUP expression. Separate multiple
                  values with commas or use the DUP operator.
                                    -♦-