Region origin

The symbolic origin of every region, other than the first, must be specified with an OVERLAY statement. Once a new region is specified, a segment origin from a previous region should not be specified.

In the sample multiple-region program, the symbolic origin THREE is assigned to region 2, as shown in Figure 1. Segments 6 and 7 are at load point THREE.

Figure 1. Symbolic segment and region origin in multiple-region program ieab1v11

If the following is added to the sequence for the single-region program, the multiple-region structure is produced:

          .
          .
          .
  OVERLAY THREE(REGION)
Control section CSH
  OVERLAY THREE
Control section CSI