Alessandro Dorigatti has made a ZX Spectrum (48k PAL) core for the Chameleon 64. The core supports the ULA+ 64 color mode, a ZXMMC interface, a Kempston joystick emulation and reading from TAP files. You can switch between PAL and NTSC mode. An English manual and a keyboard layout is included.

More information about the Chameleon 64.