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<body>
<h1>Getting started - a ZPU hello world program</h1>
The ZPU comes with a standard GCC toolchain and an instruction set simulator. This allows compiling, running & debugging simple test programs. The Simulator has
some very basic peripherals defined: counter, timer interrupt and a debug output port.
<h2>Installing</h2>
<ol>
<li>Install Cygwin. http://www.cygwin.com
<li>Install Java
<li>Start Cygwin bash
<li>cd zpu/sw
<li>sh setup.sh
<li>/tmp/zpu/install/bin now has the .exe files for the GCC toolchain & GDB
<li>Optionally you may set up PATH variables to point to /tmp/zpu/install/bin<br>
source env.sh
</ol>
<h1>Hello world example</h1>
The ZPU toolchain comes with newlib & libstdc++ support which means that many C/C++ programs can be compiled without modification.
<p>
<code>
cd zpu/sw/helloworld<br>
../install/bin/zpu-elf-gcc -phi hello.c -o hello.elf <br>
</code>
<h2>Running the hello world example in GDB</h2>
<ol>
<li>cd zpu/sw/helloworld
<li>Launch the simulator from a seperate bash shell:<p>
java -classpath ../simulator/zpusim.jar -Xmx512m com.zylin.zpu.simulator.Phi 4444
<p>
<img src="helloworld/zpusim.PNG" border=0>
<li>Launch GDB:<p>
../install/bin/zpu-elf-gdb hello.elf
<li>Connect to target, load and run application:<p>
<code>
(gdb) target remote localhost:4444<br>
(gdb) load<br>
(gdb) continue<br>
</code>
<p>
<img src="helloworld/gccgdb.PNG">
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