PapilioWiring-ArduinoIDE0018e
Lots of big changes here.

-PWM pins can be moved to any available Papilio One pin by writing to an address from a sketch.
-SPI pins can be moved to any available Papilio One pin by writing to an address from a sketch.

--Example code and libraries have been added for the following Wings:
-BPW5002 MicroSD Wing
-BPW5003 LCD Wing
-BPW5005 1 Axis Stepper C...

A new version of the Butterfly Wiring/Arduino IDE has been added under the files section. It adds the following capabilities to the AVR8 core:
-16K Bytes of Program Memory
-Implements PortA-F for 48 I/O lines
-Increases the clock speed to 16Mhz
-Supports Butterfly One board.

The Butterfly Wiring-Arduino IDE is a specially modified version of the Arduino IDE that supports the AVR8 Soft Processor and the Butterfly Platform FPGA development boards. Many Arduino sketches can run with no modification.

Why?

Why would you want to run the Arduino IDE on an FPGA? The answer is rapid prototyping without limits. An FPGA is like a clean slate just waiting to become anything you want. You can do things in hardware with an FPGA that can only be dreamed of on an Arduino. But, it is difficult to design a system from scratch on an FPGA. This AVR8/Arduino project provides an easy to use environment that you are already familiar with that gets you up and running in no time on an FPGA. This provides a great springboard to start exploring the exciting possibilities of an FPGA.

Features

• Works with existing Arduino sketches, anything that doesn't use analog should compile.
• Familiar Arduino user interface.
• No special FPGA knowledge required, no HDL or synthesis tools to learn.
• Uses the AVR8 Soft Processor which is an Open Source RISC processor that implements all the registers and instructions of an ATmega103 processor.
  • AVR8 supports UART, timers, PWM, and interrupts.
• Everything from the processor to the IDE is Open Source and customizable. If you need more digital I/O or more PWM's then you can just modify the source.

Limitations

• Analog - The Butterfly Platform FPGA hardware does not have native support for analog pins. Future support will be added through Wing additions.

Videos

LED Blink Demo

UART Demo

Windows

• Download the latest version of the software.
• Unzip the contents to a folder.
• Double click on "arduino.exe"
• Choose the example program, "Blink"
  • 
• Select your Butterfly Platform board type
  • 
• Plug the Butterfly Platform board into the USB port.
• Click the "Upload" button or press "CTL-U"
  • 
• Check the locations of the pins below and verify that PortB pin 5 is blinking.

• Download Wiring/Arduino IDE
• Source code in SVN
• AVR8 Soft Processor

• The Arduino IDE source code was downloaded from the Ardino.cc website and is maintained by the Arduino team.
• The AVR8 Soft Processor is an Open Source RISC processor that implements all the registers and instructions of an ATmega103 processor. It was written by Ruslan Lepetenok and is maintained at opencores.org.
  

THE Arduino  and Butterfly Platform SOFTWARE IS PROVIDED TO YOU "AS IS," AND WE MAKE NO EXPRESS OR IMPLIED WARRANTIES WHATSOEVER WITH RESPECT TO ITS FUNCTIONALITY, OPERABILITY, OR USE, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR INFRINGEMENT. WE EXPRESSLY DISCLAIM ANY LIABILITY WHATSOEVER FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST REVENUES, LOST PROFITS, LOSSES RESULTING FROM BUSINESS INTERRUPTION OR LOSS OF DATA, REGARDLESS OF THE FORM OF ACTION OR LEGAL THEORY UNDER WHICH THE LIABILITY MAY BE ASSERTED, EVEN IF ADVISED OF THE POSSIBILITY OR LIKELIHOOD OF SUCH DAMAGES.