Based around the work of NitrOS-9, a community-based distribution of the Microware OS-9 operating system for the 6809 that was introduced in the late 1970s and sold into the 1980s, its next evolution is into novel metal.
Please consult the wiki. Mind it is rather slow to load and could benefit being moved. Will address this during the project.
The Hitachi 6309, which contains additional registers and enhanced instructions, is also supported.
Here are the current ports available:
| Computer | Port | Processor |
|---|---|---|
| TRS-80 Color Computer | NitrOS-9 Level 1 | 6809 & 6309 |
| Radio Shack Color Computer 2 | NitrOS-9 Level 1 | 6809 & 6309 |
| Tandy Color Computer 3 | NitrOS-9 Level 2 | 6809 & 6309 |
| CoCo 3 FPGA | NitrOS-9 Level 2 | 6809 |
| Dragon 64 & Tano Dragon | NitrOS-9 Level 1 | 6809 |
| Dragon Alpha | NitrOS-9 Level 1 | 6809 |
| Atari w/ Liber809 | NitrOS-9 Level 1 | 6809 |
| Corsham 6809 SS-50 | NitrOS-9 Level 1 | 6809 |
In order to build the OS, you need the following:
- lwtools. This package contains the required 6809 assembler and linker. To get directly to it, have a look here
- ToolShed. Provides file system tools for creating disk images, copying files to and from those disk images, and more.
Once downloaded and installed, you can build the entire project:
export OS9DIR=$HOME/os9
make
The result is a number of disk images (ending in .dsk) that can be used on real floppy drives, emulators, and DriveWire.