Byte storage directive

    Format

      .BYTE  expression-list

1  –  Parameter

 expression-list

    One or more expressions separated by commas. Each expression
    is first evaluated as a quadword expression; then the value of
    the expression is truncated to fit in a byte. The value of each
    expression should be in the range 0 to 255 for unsigned data or
    in the range -128 to +127 for signed data.

2  –  Description

    .BYTE generates successive bytes of binary data in the object
    module.

3  –  Notes

    o  The assembler displays a warning message if the expression is
       outside the range -128 to -255.

    o  The assembler will truncate the most significant bits of an
       integer or external value that is too large to store in eight
       bits.

    o  You can only use this directive within data or mixed psects
       (psects that have either the NOEXE or MIX attributes).

4  –  Example

        A:      .BYTE   5       ; Stores 5 in a byte