Sizif-XXS

Smallest FPGA-based ZX Spectrum clone with real Z80.

Tech specs

• 100x24.5mm PCB
• PS/2 keyboard
• Pentagon, Spectrum 128K and Spectrum 48K timings
• Altera EP1C3T100 FPGA
• Real Z80 in 3.5MHz, 7MHz (no-wait turbo) and 14MHz (turbo with wait-states) modes
• 512K RAM
• TurboSound with switchable stereo ABC/ACB/mono output
• Integrated DivMMC, 1x microSD socket
• PAL video output
• ULAplus
• Mono covox (Pentagon standard)
• SounDrive (4-channel stereo covox)
• Tape input via 3.5" jack
• USB 5V power supply

Current status

Work in progress!