The installer will attempt to auto-detect your cart type and size. If you've frankensteined a cart together, or have an unsupported chip, you can try to use the 'manual' setup option, and tell it roughly what to try. Every EEPROM I've encountered in the wild is currently supported.
FreePSXBoot is the exploit (like FreeMCBoot for PS2) which allows you to boot unirom from the memory card.
Unirom will automatically detect your playstation bios version and install the appropriate card image of the same version.
The V2 versions of datel carts (not V1, not V3, etc, lol) have a weird memory map with a big gap in the middle. If you want to dualboot unirom + caetla, you'll need this.If you don't want caetla, you could use the unirom_standalone.rom
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