My Intel 8080 CPU assembler - in Go!

Ocala is an assembler for Z80 / R800 / 6502.

Assembler written in Go

Motorola 68000 assembler and disassembler

Go library providing algorithms optimized to leverage the characteristics of modern CPUs

cbmasm is an assembler targeted primarily to the Commodore 128 that allows the programmer to switch between 8510 and Z80 assembly code in a single source file.

WASM based bindings for the Keystone assembler

6502 CPU emulator, assembler, disassembler, debugger and host written in go

An assembler for RISC-V (RV32I) written in Go (🚧 in construction 🚧)

A Golang assembler, virtual machine, and debugger written for the LC3 machine architecture

Code from Introduction to Machine Code article

Brookshear (VOLE) Machine Assembly translator in Go

A profiler and testing tool for the 6502/65C02 microprocessor

JIT compiler in Go

Assembler for the Hack assembly language https://www.nand2tetris.org/project06

A Two Pass SIC/XE Assembler

Assembles QuAC assembly into 16 bit QuAC v1.0 ISA binaries

A very basic CPU simulator

Assembler abstraction, targeting x86-64 and ARM64 simultaneously

Assembler for a MIPS processor implemented in VHDL as part of RIT's Digital Systems Design II class.