-------------------------------------------------------------------------------
Example: ADSP-21262 EZ-KIT LITE Push Button Example
Target: ADSP-21262
Date: September 19, 2003
Tools: VisualDSP++ 3.0 SP1
Hardware: ADSP-21262 EZ-KIT LITE
-------------------------------------------------------------------------------

This directory contains an Assembly code example pushbutton blink for use with
the ADSP-21262 Ez-Kit Lite Development System.

The project illustrates how to use the push buttons on the board in order to
blink the on board LEDs.  On the board the pushbuttons are connected to the
IRQ1, IRQ2, DAI_P19, and DAI_P20 signals on the DSP.  The DAI signals can be
routed to the miscellaneous channels (MISCBx) which are associated with DAI
interrupts.  The IRQ signals have dedicated interrupts. In the example code,
DAI_P19 is routed to MISCB1 which is associated with DAI interrupt 23 and
DAI_P20 is routed to MISCB2 which is associated with DAI interrupt 24.  In
the interrupt service routines the DSP is instructed to blink an LED through
the parallel port.

Pressing IRQ1 lights LED1 and pressing IRQ2 lights LED2.
Pressing DAI_P19 lights LED3 and pressing DAI_P20 lights LED4.

****************************************************************************

Source Files contained in this directory:
EZkit Push Button.dpj   VisualDSP project file
EZkit Push Button.asm   ADSP-21262 source
21262_IVT.asm           Interrupt Vector Table
ADSP-21262-EZKIT.ldf          Linker description file
-------------------------------------------------------------------------------
Dependencies contained in VisualDSP++ default include path:
def21262.h          Header file with generic definitions
SRU.h               Header file with DAI definitions
 _________________________________________________________________