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README      Example ADSP-21262 Parallel Port Flash Overlay Program

Analog Devices, Inc.
DSP Division
P.O. Box 9106
Norwood, MA 02062

06-Feb-2004

This directory contains a simple blink program to demonstrate the use of code
overlays from Parallel Port Flash on the ADSP-21262 using VisualDSP++(R). There
are four overlays used in this example. Two of them are contained in individual
files, while the final two are contained in a single final.

Change the project options to generate a loader file in the PROM format in either 32-bit
ASCII or Intel Hex formats. The loader files must be burned into the Parallel flash before
the built project will run correctly. Use the Flash Programmer plugin in VisualDSP++ with
the Intel Hex format.

Files contained in this directory:

blink_1st.asm       First overlay section
blink_last.asm      Final two overlay sections
blink_main.asm      Main routine which calls setup and overlay routines.
blink_mid.asm       Middle overlay section
Ovl_Init.asm        Routine to gather information from the flash
Ovl_Sec_Info.asm    Routine to parse the information into the various sections created by the loader.
ovlay.h             Contains basic information about the overlays used throughout the project.
ovlay.ldf           Linker description file
ovly_mgr.asm        Overlay Manager routine that is called to fetch all overlays.
README.TXT          This file
flash_ovly.dpj      VisualDSP++ project file to build this project
