DATASEG          Define data segment                                Directive

  DATASEG

    Defines the start of the initialized data segment in your module. You
    must first have used the MODEL directive to specify a memory model.

    For memory models TINY, SMALL, COMPACT, MEDIUM, LARGE, and HUGE, the
    data segment is put in a group called DGROUP, which also contains the
    segments defined with the STACK, CONST, and UDATASEG directives.