Analog Devices VISUALDSP++ 3.5, Manual

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Vi+ 3.5 Loader Manual 1-5
for 16-Bit Processors
Introduction
Booting Modes
A fully debugged program can be automatically downloaded to the proces-
sor after power-up or after a software reset. This process is called booting.
The way the loader creates a boot-loadable file depends upon how your
program is booted into the processor.
Once an executable is fully debugged, it is ready to be converted into a
processor-loadable file.
The exact boot mode of the processor is determined by sampling one or
more of input flag pins. Booting sequences, highly processor-specific, are
detailed in the following chapters.
ADSP-218x, ADSP-219x, and Blackfin processors support different boot
mechanisms. Generally spoken, the following schemes can be used to pro-
vide program instructions to the processors after reset.
• “No-boot Mode”
• “PROM Booting Mode”
• “Host Booting Mode”
No-boot Mode
The processors starts fetching and executing instructions from
EPROM/Flash memory devices directly. This scheme does not require any
loader mechanism. It is up to the user program to initialize volatile
memories.
The splitter utility helps to generate a file that can be burned into the
PROM memory.