VisualDSP++ 4.5 Loader and Utilities Manual - Analog Devices

Loader for ADSP-2106x/21160 SHARC Processors
Refer to EE-56: Tips & Tricks on the ADSP-2106x EPROM and HOST
bootloader, EE-189: Link Port Tips and Tricks for ADSP-2106x and
ADSP-2116x, and EE-77: SHARC Link Port Booting on the Analog
Devices Web site for more information.
ADSP-2106x/21160 Multi-Application (Multi-DXE)
Management
Currently, the loader utility generates single-processor loader files for host
and link port boot modes. As a result, the loader utility supports multiprocessor
EPROM boot mode only. The application code must be modified
for a multiprocessor system boot in host and link port modes.
The loader utility can produce boot-loadable files that permit the
ADSP-2106x/21160 SHARC processors in a multiprocessor system to
boot from a single EPROM. In such a system, the BMS signals from each
SHARC processor are OR’ed together to drive the chip select pin of the
EPROM. Each processor boots in turn, according to its priority. When
the last processor finishes booting, it must inform the processors to begin
program execution.
Besides taking turns when booting, EPROM boot of multiple processors
is similar to a single-processor EPROM boot.
When booting a multiprocessor system through a single EPROM:
Connect all BMS pins to EPROM.
Processor with ID# of 1 boots first. The other processors follow.
The EPROM boot kernel accepts multiple .dxe files and reads the
ID field in SYSTAT to determine which area of EPROM to read.
All processors require a software flag or hardware signal (FLAG pins)
to indicate that booting is complete.
VisualDSP++ 4.5 Loader and Utilities Manual 3-23