New Version 0.216 of MAME Emulator out with enhancements on Spectrum Emulation:
https://mamedev.org/?p=476
"ZX Spectrum emulation has been enhanced with better open bus read behaviour and support for two Miles Gordon Technology peripherals."
https://mamedev.org/?p=476
"ZX Spectrum emulation has been enhanced with better open bus read behaviour and support for two Miles Gordon Technology peripherals."