Playing Rick Dangerous on ZX Spectrum +3e with ZXMMC mass storage

Featuring my beefed up ZX Spectrum 3e: - Fully recapped mainboard - Gary Lancaster's ROM - ZXMMC with 8GB MMC card ---- Workbench 3e v2.1 installed (Kempston Mouse controlled) - ZX-HD (HDMI output) ---- Blustream HD11AU HDMI audio mixer - K-MOUSE TURBO 2017-LP -- Kempston Mouse port: Microsoft USB mouse connected -- Kempston Joystick port: QuickShot II Turbo microswitch joystick connected - Double Sinclair-to-Atari-DB9 joystick adapter ---- Sinclair Joystick port 1: QuickJoy III Supercharger microswitch joystick connected ---- Sinclair Joystick port 2: unused - Gotek external floppy drive with an USB stick - Refurbished (head alignment) internal 3'' floppy disc drive - Internal hardware A/B drive switch - Cisco Power supply (Sinclair PSU replacement) ---- hardware power on/off switch ---- single power source for both 3 and the Gotek device - BT-631 serial port connector ---- null-modem serial connection with Desktop Linux machine - Spectranet network interface (jumper-disabled power-on initialization