21FX

21FX is an SNES primary bootloader that leverages CPLD expansion to facilitate reset hijacking and enable executable code uploads into WRAM, primarily utilizing byuu's Controller Port Serial Cable. Notable features include an updated design conforming to a DB-25 connector, a separate microchip EEPROM for IPLROM, and enhanced communication support through an Adafruit FT232H USB transceiver. The project offers comprehensive design files including Altium and Verilog, ensuring compatibility with the SNES hardware architecture.