VisualDSP++ 4.5 Loader and Utilities Manual - Analog Devices

Blackfin Processor Booting
.DXE 1
.DXE 2
.DXE 3
.DXE 4
10-BYTE HEADER FOR COUNT
-
4-BYTE COUNT FOR .DXE1
.DXE 1 APPLICATION
10-BYTE HEADER FOR COUNT
4-BYTE COUNT FOR .DXE 2
.DXE 2 APPLICATION
10-BYTE HEADER FOR COUNT
4-BYTE COUNT FOR .DXE 3
.DXE3 APPLICATION
10-BYTE HEADER FOR COUNT
4-BYTE COUNT FOR .DXE 4
.......................
.......................
BLOCK 1 10-BYTE HEADER
BLOCK 1
BLOCK 2 10-BYTE HEADER
BLOCK 2
BLOCK 3 10-BYTE HEADER
BLOCK 3
..............
Figure 2-32. ADSP-BF531/BF32/BF33/BF534/ BF536/BF537/BF538/
BF539/BF561/BF566: Multi-Application Booting Stream
the on-chip boot ROM, it has full control over the boot process.
Now the second-stage loader can use the .dxe byte counts to boot
in one or more .dxe files from external memory.
Use the initialization block switch, “-init filename.dxe”, where
filename.dxe is the name of the executable file containing the initialization
code. This option allows you to change the external
memory pointer and boot a specific .dxe file via the on-chip boot
ROM.
A sample initialization code is included in Listing 2-2. The R0 and
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