This repository contains the source code for the Dragon 64 versions of the Microsoft 16K BASIC Interpreter for the Motorola 6809 (aka BASIC-69 and Extended Color BASIC).

Software and modifications for Grant Searle's multicomp FPGA design, mostly focussed towards the 6809 variant: Forth (CamelForth), FLEX, CUBIX, NITROS9, FUZIX and the exec09 emulator.

A Tandy Color Computer 1, 2, and 3 assembler written in Python

Motorola 6809e 8-bit CPU emulator

Various projects for the Tandy Color computer.

A simple multitasking OS for the 6809

I'm programming the Vectrex to do a dinosaur game! This won the Hackathon.

6809 assembly language routine to find the length of a C-style string (with test suite in Disk Extended Color BASIC and 6809 assembly) (Version 1.7, released 30 March 2019)

Disassembly of 6809 based CMS 9609, 9619, 9639 and 9642 SBC Monitor ROMs

ASSIST09 - MC6809 Monitor, Copyright (C) Motorola, Inc., 1979, Appendix B of M6809PM/AD

Adds language support in Atom for Motorola 6809/Hitachi 6309 assembly

The PC-09 will be a 6309 based microcomputer.

vectrex game

A Motorola 6809 disassembler written in 6809 assembly.

MC6809E simulator (and basic OS-9 I/O simulator) written in 80386 Assembly language (Borland TASM v1.01 and TLINK v2.00)

A program written in C (C89 dialect) that generates type-in BASIC programs. Targets multiple 8-bit machines. (in development, don't use it yet)

A Dragon 32 demo released at NOVA 2022

💾 Motorola 6809 8-bit microprocessor CPU Instruction

Software and modifications for Grant Searle's multicomp FPGA design, mostly focussed towards the 6809 variant: Forth (CamelForth), FLEX, CUBIX, NITROS9, FUZIX and the exec09 emulator.

Assembler and linker for the Motorola 6809 and Hitachi 6309 microprocessors