Sizif-512 is a ZX Spectrum 48+/128/+2/+3 clone with SD card support, esxDOS, a joystick port, and other extras. It runs on a real (non-emulated) Z80 processor, an AY-3-8910 sound chip, and a programmable CPLD as the ULA. The Sizif-512 project is a more modern version of the Harlequin 128 project. It is the motherboard for the ZX Spectrum Neo computer.
The kit includes only the printed circuit board (PCB) for DIY assembly.
Sizif-512 project page with documentation: https://github.com/UzixLS/zx-sizif-512
More about Sizif-512 and ZX Spectrum Neo: https://mumio.dev/zx-spectrum-neo/

![_original_Sizif-512-DIY-PCB_[462]_0c20274c9e34 Sizif-512 DIY - PCB](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-PCB_462_0c20274c9e34-600x361.jpg)
![_original_Sizif-512-DIY-PCB_[464]_0c20274c9e34 Sizif-512 DIY - PCB](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-PCB_464_0c20274c9e34-600x338.jpg)
![_original_Sizif-512-DIY-PCB_[463]_0c20274c9e34 Sizif-512 DIY - PCB](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-PCB_463_0c20274c9e34-600x338.jpg)
![_original_Sizif-512-DIY-PCB-z-Altera-ROM_[461]_0c20274c9e34 Sizif-512 DIY - PCB](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-PCB-z-Altera-ROM_461_0c20274c9e34-600x471.jpg)
![_original_Sizif-512-DIY-PCB_[462]_0c20274c9e34 Sizif-512 DIY - PCB](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-PCB_462_0c20274c9e34-100x100.jpg)
![_original_Sizif-512-DIY-PCB_[464]_0c20274c9e34 Sizif-512 DIY - PCB](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-PCB_464_0c20274c9e34-100x100.jpg)
![_original_Sizif-512-DIY-PCB_[463]_0c20274c9e34 Sizif-512 DIY - PCB](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-PCB_463_0c20274c9e34-100x100.jpg)
![_original_Sizif-512-DIY-PCB-z-Altera-ROM_[461]_0c20274c9e34 Sizif-512 DIY - PCB](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-PCB-z-Altera-ROM_461_0c20274c9e34-100x100.jpg)

![_original_Sizif-512-DIY-zestaw-2-wszystkie-czesci_[414]_0c20274c9e34 ZX Spectrum Sizif-512 LARGE DIY - parts + case](https://mumio.dev/wp-content/uploads/2026/01/original_Sizif-512-DIY-zestaw-2-wszystkie-czesci_414_0c20274c9e34-300x300.jpg)
![_original_Plyta-PCB-Sizif-512-z-wlutowana-i-zaprogramowana-Altera_[360]_0c20274c9e34 Sizif-512 DIY - PCB with Altera + ROM](https://mumio.dev/wp-content/uploads/2026/01/original_Plyta-PCB-Sizif-512-z-wlutowana-i-zaprogramowana-Altera_360_0c20274c9e34-300x300.jpg)
![_original_USLUGA-wyciecia-obudowy-pod-Sizif-512_[383]_0c20274c9e34 CASE CUT-OUT SERVICE for Sizif-512](https://mumio.dev/wp-content/uploads/2026/01/original_USLUGA-wyciecia-obudowy-pod-Sizif-512_383_0c20274c9e34-300x300.jpg)
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