The platform/atarixl/ directory is used for targeting an Atari XL computer. Most things are shared between the 6502-based targets so please consult cpu/6502/README.md for further details.
The following Atari XL Ethernet card is supported:
- Dragon Cart: Use driver cs8900a.eth with address $D500.
The 'disk' make goal requires HiassofT's dir2atr program. It is available at http://www.horus.com/~hias/atari/ - either as source code (being part of the 'AtariSIO driver and utilities for Linux') or as Win32 binary program (being part of the 'Atari Tools for Win32').