Going 8-bit AVR with the DUO portable computer

Back in 2013, Bits & Pieces got up close and personal with Jack Eisenmann’s multi-core homebrew computer which is built around 16 ATMega328P microcontrollers. However, the talented Eisenmann didn’t stop there, as he subsequently decided to create the DUO tiny, a programmable computer based on Atmel’s ATtiny84.

Earlier this week, Eisenmann debuted the DUO portable, an inexpensive 8-bit computer based on Atmel’s ATMega1284 MCU. The platform is equipped with a black and white LCD output, along with a QWERTY keypad input.

Files are stored in a 64 KB EEPROM chip, with data written and read via a host computer through a serial interface.

All programs on the computer are written in a proprietary language dubbed “DPCL,” an acronym for DUO portable command language. Essentially, 

DPCL consists of plain ASCII commands interpreted by the ATMega1284. The programs are checked for syntax errors during runtime, with 12 KB of RAM allocated for DPCL programs.

Interested in learning more about the 8-bit AVR DUO portable? You can check out the project’s official page here.

1 thought on “Going 8-bit AVR with the DUO portable computer

  1. Pingback: ATtiny84 powers this DUO Decimal SBC

 | Bits & Pieces from the Embedded Design World

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