Reading SNES carts - dkidd928/cartreader GitHub Wiki

Set the config switches as shown in this picture:

Then select Super Nintendo in the main menu and again Super Nintendo in the sub-menu. The game should now be automatically recognized and details about it should be shown on the screen. If you're dumping a proto without valid header information you will get an error screen and then can set the mapping manually.

Notes on games with SA-1 and similar special chips:

To unlock cartridges with SA-1 you need both the Adafruit Clock Generator and the snesCIC installed.
It's very important to provide the Nintendo Cart Reader with a high quality power source for dumping SA-1 games, not all USB ports will work. Best use a 5V/2A phone charger. An original iPhone or Amazon Fire Tab charger works great while a cheap Chinese phone charger might not unlock SA-1. You can also install a 470uF capacitor to improve the Cart Readers supply power and calibrate the Clock Generator like shown here.
Most times it needs a second try to unlock the SA1 cartridge. Simply power cycle the SA1 chip by switching the cart reader off and on again.