microarch

microarch is a minimalistic, 8-bit, extensible, RISC, Harvard, load-store computer architecture intended for small low-power (or power constrained) microcontrollers.

It offers 8-bit data address space and up to 16-bit instruction address space, allowing for up to 256 bytes of directly addressable data memory and up to 65025 instructions.

The standard defines 8 registers available to the programmer with a powerful, unique register addressing system.

Navigation and usage

• README.md - You are here.
• LICENSE - License in place for the project.
• microarch-ISA.pdf - Full ISA documentation for the architecture.
• base-core/ - A Verilog design of an example core (a reference implementation of the ISA), with a Verilator/SystemC testbench (this part of the project has its own readme file).
• src/ - A software development kit (SDK): assembler, disassembler and an emulator with debugging functions. Written in C++.
• entry/ - Entry points for SDK (there are two - tests and user CLI) - separated from src so that it's easier to use the SDK as a C++ library.
• CMakeLists.txt - Build system for the SDK (there are 3 CMake targets: microarch-test for tests, microarch for the CLI program and microarch-common for use as a library)
• examples/ - Example programs written in microarch assembly