30 April 2022 Introduction This document contains answers to questions that have either been asked previously or are quite likely to be asked in the future. Links to specific sections of the online versions of the User Manuals are provided where they are deemed appropriate. This is by no means an exhaustive list and new FAQs will be added when and if required. FAQs Battery4/30/2022
30 April 2022 Description The Digirule 2U is an Open Source Hardware programmable 8-bit binary computer built into a 20 cm (8”) PCB ruler. Full details can be found here: bradsprojects.com/digirule2 Features and Specifications Microchip PIC18F46K20 8-bit microcontroller4/30/2022
8 January 2021 Introduction UDR2 is a utility used to install firmware updates on the Digirule 2U. Versions are available for Linux, Mac OS and Windows. This manual should be considered a supplement to the Digirule 2U User Manual. Getting Started Before running the utility, you need to download from the Digirule 2U website the hex file for the firmware you want to install. Example firmware file: dr2u.firmware.22sep2020.hex1/9/2021
8 January 2021 Introduction ADR2 is a traditional style command line cross-assembler for the Digirule 2U. Its purpose is to translate assembly language program source into machine code for downloading to the Digirule 2U. Versions are available for Linux, Mac OS and Windows. The assembler has the following features: Supports the entire Digirule 2U instruction set Supports directives for control of the assembly and listing process Supports definition of symbolic names to represent memory addresses and constants1/9/2021
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