Chameleon-AVR Nurve Networks, Chameleon-AVR Datasheet - Page 216

• Manufacturer Part Number: Chameleon-AVR
• Description: MCU, MPU & DSP Development Tools AVR8 & PROPELLER DEV SYSTEM (SBC)
• Manufacturer: Nurve Networks

Specifications of Chameleon-AVR

• Processor To Be Evaluated: AVR 328P
• Data Bus Width: 8 bit
• Interface Type: USB, VGA, PS/2, I2C, ISP, SPI
• Operating Supply Voltage: 3.3 V, 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2009 NURVE NETWORKS LLC “Exploring the Chameleon AVR 8-Bit”
Technical Overview
This demo uses the vertical scroll register to scroll an array of tiles (space invader characters) up and down. If we wanted
to we could scroll the image continuously by course scrolling after each smooth scroll thru the scanlines 0..7 of each
character. Below is an excerpt that shows the space invader rendering code and the smooth scrolling main loop:
I have highlighted the single API call that sets the smooth scrolling register, that’s all there is to it!
Summary
This demo shows how easy it is to smooth scroll vertically. Additionally, it shows some of the hidden / special characters
in our little character set to help make games!
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