Superfo Harlequin 128

The Superfo Harlequin is a modern Sinclair ZX Spectrum 128K clone. It does not require any custom chips, the ULA is simulated by a number of 74HC-type standard chips. On the other hand, the AY sound chip and the RAM chips are only available as NOS parts today.

I bought the Harlequin as a DIY kit, and assembled it myself. Its house is a transparent replica ZX Spectrum case with a special cutout for the RGB output, and a white keyboard.

Configuration

  • Built: completed May 19th 2022
  • Mainboard: Revision 2D
  • CPU: Z80A
  • RAM: 128KB
  • ROM: AM29F040B (contains 8 ROM images, selectable via DIP switch)
  • Sound: AY-3-8912

Modifications

  • Transparent white case with a special cutout for Harlequin boards. White keymat and white faceplate.
  • Used precision sockets instead of the original standard IC sockets.