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VisualDSP++ 4.5 Loader and Utilities Manual - Analog Devices

VisualDSP++ 4.5 Loader and Utilities Manual - Analog Devices

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<strong>Loader</strong> Comm<strong>and</strong> Line<br />

Introduction<br />

If invoked from a comm<strong>and</strong>-line prompt, the loader <strong>and</strong> splitter utilities<br />

accept numerous control switches to customize the loader file generation.<br />

<strong>Loader</strong> Property Page<br />

The loader property page is part of the Project Options dialog box of the<br />

<strong>VisualDSP++</strong> graphical user interface. The property page is a graphical<br />

tool that assists in composing the loader utility’s comm<strong>and</strong> line.<br />

Boot Mode<br />

Most processors support multiple boot modes. A boot mode is determined<br />

by special input pins that are interrogated when the processor awakes from<br />

either a reset or power-down state. See also “Boot Modes” on page 1-12.<br />

Boot Kernel<br />

A boot kernel is software that runs on the target processor. It reads data<br />

from the boot source <strong>and</strong> interprets the data as defined in the boot stream<br />

format. The boot kernel can reside in an on-chip boot ROM or in an<br />

off-chip ROM device. Often, the kernel has to be pre-booted from the<br />

boot source before it can be executed. In this case, the loader utility puts a<br />

default kernel to the front of the boot image, or, allows the user to specify<br />

a customized kernel. See also “Boot Kernels” on page 1-14.<br />

Boot ROM<br />

A boot ROM is an on-chip read-only memory that holds the boot kernel<br />

<strong>and</strong>, in some cases, additional advanced booting routines.<br />

Second-Stage <strong>Loader</strong><br />

A second-stage loader is a special boot kernel that extends the default booting<br />

mechanisms of the processor. It is typically booted by a first-stage<br />

kernel in a st<strong>and</strong>ard boot mode configuration. Afterward, it executes <strong>and</strong><br />

boots in the final applications. See also “Boot Kernels” on page 1-14.<br />

<strong>VisualDSP++</strong> <strong>4.5</strong> <strong>Loader</strong> <strong>and</strong> <strong>Utilities</strong> <strong>Manual</strong> 1-3

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