The X16 ROM consists of various components with different licenses:
The following components are based on non-open source projects, and their base code has commercial licenses:
| Component | Subdirectory | Copyright |
|---|---|---|
| Commodore KERNAL | kernal/cbm |
©1983 Commodore Business Machines (CBM) |
| Microsoft BASIC (with Commodore extensions) | basic,math |
©1977 Microsoft Corp. ©1983 Commodore Business Machines (CBM) |
| GEOS | geos |
©1985 Berkeley Softworks |
The X16 project has a license to use this code in the context of the X16 computer. If you want to use these components outside of the context of the X16, please contaxt Cloanto (KERNAL and BASIC) and Click Here Software (GEOS) for details.
The following component is GPLv3-licensed.
| Component | Subdirectory | License |
|---|---|---|
| MEGA65 KERNAL Reimplementation | kernal/open-roms |
GPLv3 |
This component is not a part of a default build!
The following components are in the public domain:
| Component | Subdirectory | License |
|---|---|---|
| PETSCII charset | charset |
public domain |
| ISO charset (PXLfont) | charset |
public domain |
| Keyboard tables | keymap |
public domain |
| Machine Language Monitor | monitor |
public domain |
The following components are under the 3-clause BSD license:
| Component | File | License |
|---|---|---|
| LZSA2 Decompression | kernal/lzsa.s |
3-clause BSD |
All code outside of the subdirectories above as well as additions to legacy code are under the 2-clause BSD license.
| Component | Subdirectory | License |
|---|---|---|
| BASIC additions | basic |
2-clause BSD |
| KERNAL additions | kernal |
2-clause BSD |
| GEOS additions | geos |
2-clause BSD |
| CMDR-DOS and FAT32 for 6502 | dos |
2-clause BSD |
| CodeX Interactive Assembly Environment | codex |
2-clause BSD |