Sizif-512 is a modern replica of the ZX Spectrum 48+/128/+2/+3 computer, featuring SD card support, esxDOS system, a joystick port, and other additions. It runs on a real (non-emulated) Z80 processor, an AY-3-8910 sound chip, and a programmable CPLD acting as the ULA. The Sizif-512 project is a more modern version of the Harlequin 128 project. Sizif-512 is the motherboard for the ZX Spectrum Neo computer.

The kit includes a complete set of parts for self-assembly. The five most difficult components are already soldered, and those requiring programming are pre-programmed. This means you don’t have to solder the most challenging parts or own programmers.

The kit includes:

assembly instructions
PCB board and a full set of components for assembly
soldered and programmed CPLD EPM1270T144, soldered SN74CB3T3245PW
SST39SF040 – programmed ROM
SD card with preloaded esxDOS system, hundreds of demos and music
complete ZX Spectrum 48 case with keyboard

To get the system running, you’ll also need at least:

9V power supply
TV or monitor with SCART or RCA input, or an HDMI converter
SCART cable or RCA

And for full enjoyment:

Sizif-512 project page with documentation: https://github.com/UzixLS/zx-sizif-512
More about Sizif-512 and ZX Spectrum Neo: https://mumio.dev/?page_id=320

Note:
AY-3-8910 chips and Z80 processors are no longer manufactured. Those supplied in the kit come from various sources and may not be factory new, but each is tested before shipping. The kit includes an 8 MHz Z80 NMOS processor.

Assembly and startup of the kit require an advanced level of electronics knowledge. We do not provide assistance with kit startup. If you cannot get the assembled kit running, we recommend our startup service, available at this link.