NAME
       OwnBlitter -- get the blitter for private usage

   SYNOPSIS
       OwnBlitter()

        void OwnBlitter( void );

   FUNCTION
        If blitter is available return immediately with the blitter
        locked for your exclusive use. If the blitter is not available
        put task to sleep. It will be awakened as soon as the blitter
        is available. When the task first owns the blitter the blitter
        may still be finishing up a blit for the previous owner. You
        must do a waitblit before actually using the blitter registers.

        Calls to OwnBlitter() do not nest. If a task that owns the
        blitter calls OwnBlitter() again, a lockup will result.
        (Same situation if the task calls a system function
        that tries to own the blitter).

   INPUTS
        NONE

   RETURNS
        NONE

   SEE ALSO
        disownblitter() waitblit()