How does dual-slot mode *technically* work?

How does dual-slot mode *technically* work? gameboy slot Cartridge slot for GameBoy Pocket J&T Studio - nb789 slot GameBoy Advance卡帶插槽立體聲耳機麥克風無線通訊功能 CPU 上螢幕內建背光功能解析度192 X 256 點距 26萬色下螢幕 3吋 TFT彩色

nb789 slot The GB Operator is already an impressive piece of kit; it's a USB cartridge dock into which you can slot in a Game Boy, Game Boy Color, or Game

best mazooma slot sites The back side of the SmartBoy has a physical cartridge slot flanked by L and R buttons Below the cartridge slot, there's one more toggle And of course, the Game Boy Camera is, at its core, a Game Boy cartridge “Like a cartridge slot for your computer,” Epilogue says, adding