ID Number: Q50524
5.10 6.00 6.00a 6.00ax 7.00
MS-DOS
Summary:
The run-time routines for medium and large models (the only ones that
overlays deal with) are compiled with /NT _TEXT. This puts all the
routines in the same named segment. The linker cannot split a segment
between the root and an overlay. Segmentation takes precedence over
overlays. The linker constructs overlays from segments, not individual
functions.
The first request for the segment (in an .OBJ that goes in the root or
in an overlay) determines where the linker will place the entire
segment (root or overlay). If your extracted .OBJ is in the overlay,
all the run time gets put into the overlay.
Consequently, the entry point of the overlay manager is put into the
overlay and not in the root, so the overlay manager code (also in
_TEXT) is not present in memory at startup. This causes the machine to
hang.
Additional reference words: 5.10 6.00 6.00a 6.00ax 7.00 S_QuickC S_QuickASM