The avr11, a atmega2560 clone with a custom SPI 256kb memory.

avr11 is a PDP-11 simulator for Atmel Atmega microcontrollers.

avr11 was inspired by Julius Schmidt’s Javascript PDP-11 simulator and currently boots a version of V6 Research Unix. In the future I hope to boot V7 Unix, 2.x series BSD and the DEC diagnostics.

Blog Posts

• avr11: simulating minicomputers on microcontrollers
• avr11: how to add 256 kilobytes of ram to an Arduino
• avr11: building an SPI SRAM shield for an Arduino Mega
• avr11: profiling on the Atmega
• avr11: performance measurements

Follow the avr11 tag for more.

Code

The code is available on Github.

Press

This project was featured on Hack-a-Day on the 24th of January.