Analog Devices VisualDSP++ 3.5 Manual page 236

Advanced LDF Commands
Overlays may be grouped or ungrouped . Use the
command to support ungrouped overlays. Refer to
Support" on page 5-8
The
OVERLAY_GROUP{}
brought into run-time memory, where the overlay for each group is run
from a different starting address in run-time memory.
Overlay declarations syntactically resemble the
They are portions of
The
OVERLAY_GROUP{}
OVERLAY_GROUP
{
OVERLAY_INPUT
{
ALGORITHM(ALL_FIT)
OVERLAY_OUTPUT()
INPUT_SECTIONS()
}
}
Figure 5-7 demonstrates grouped overlays.
In the simplified examples in
are written to overlay files (
memory segments does not matter (except to the DMA transfer that
brings them in). Overlays are active only while being executed in run-time
memory, which is located in the
5-30
for a detailed description of overlay functionality.
command groups overlays, and each group is
commands.
SECTIONS{}
command syntax is:
Listing 5-4
). Whether functions are disk files or
.OVL
program
VisualDSP++ 3.5 Linker and Utilities Manual
OVERLAY_INPUT{}
"Memory Overlay
commands.
SECTIONS{}
and Listing 5-5, the functions
memory segment.
for 16-Bit Processors