hardware

name	hardware
description	FXPAK Pro (Mk.III) hardware reference — MCU pin mapping, GPIO usage, expansion options, and board layout notes.

FXPAK Pro Hardware Reference

Reference for hardware-level work on the FXPAK Pro (sd2snes Mk.III).

Documents

• MCU Pin Map — Complete LPC1756 GPIO usage and free pin inventory
• Expansion Header P401 — 14-pin debug+expansion header (fully mapped)
• ESP32 Sidecar — UART0 communication with ESP32 (proven working)