====== Startup ======

==== ISO search ====

When the device boots, it searches SD:, USB0: and USB1: in that order, for supported disk images. It will recursively enter directories as it encounters them, so it may search a subdirectory on a disk before finding a file (e.g. it may find usb0:/a/game.iso before it finds usb0:/game.iso). This is dependent on the order in which files are stored in the filesystem on disk.

==== Supported formats ====

=== ISO ===

ISO files are supported. By default, the firmware will assume a normal sector size of 2048 in mode1 (as per a normal CD or DVD), but it will inspect the contents for an ISO9660 header to detect certain other sector sizes (e.g. CD-i formats, used by at least one Namco246 game).

=== BIN/CUE ===

To support other formats explicitly, alongside audio tracks, the game will also look for CUE files. Regardless of whether they're a single BIN file, or split into BIN/WAV, the firmware will attempt to parse the CUE correctly and load all relevant files automatically. This provides support for various CD-i/Mode2/etc. formats.

==== Port speeds ====

Some basic testing has so far revealed the following statistics. Updated firmware in the future may change these rankings.

**USB0** is the fastest port, running at USB high speed (480Mbps). Via a USB OTG cable, you can connect a USB Flash drive and store your disk images there for maximum possible access speed. Thus, this is the recommended solution.

**SD** is the second fastest port. Almost as fast as USB0, but the port can be a little tricky to insert.

**USB1** is the slowest port, running at USB full speed (12Mbps). Though it will support a disk if it's connected, this configuration isn't recommended, though is fine for firmware upgrades, connecting to a computer for command line access, and general I/O (e.g. ethernet, external control pads, and other future features)