SD structure¶

Historically the SD card was used to load the OS roms and BASIC roms. The format was developed for the MIST (and similar devices) where there are multiple platforms.

Essentially it expects a FAT formatted SD card (suggest 1-2GB) containing the folder structure:
atari800/
user/
rom/

User¶

Under user you can put any atrs, xex files or car files. You can use long filenames and folders to organise them.

Rom¶

Under rom you no longer need to put anyway, since its stored on the flash chip. However you CAN put:

• A bunch of OS/basic roms
• Turbo freezer rom
• Settings

When the EclaireXL starts it up it loads the OS and settings from the flash. It then can override these if certain special files are present.

Special rom files

• atarixl.rom - main OS rom
• ataribas.rom - atari basic
• freezer.rom - turbo freezer rom
• settings - video and system settings

Rom files¶

If present these are loaded instead of the os and basic rom on the flash chip. This is useful to have e.g. an 'Altirra OS/basic' sd card or an 'OS B' sd card etc.

Settings¶

If these are present then they are loaded in place of the settings on the flash chip. So you can for instance put in a settings file to force it to start in the specified video mode. Some example files and a program to create them can be found in here: http://www.64kib.com/autobuild/private/settings_examples/

Other rom files¶

Any other files in the rom folder are ignored. You can for instance put in atariosb.rom and atariosa.rom and load these from the menu to switch rom.