Superfo Harlequin 128K

    Pulsa aqui para ir a la versión en Español.

Introduction

    Derived from Superfo Harlequin clone project , Superfo has made a version with new features: Important Note :

    This Superfo Harlequin 128K version it is not exactly a Spectrum +128K. Timing , the number of lines per frame and the number of pixels per line are the same as Harlequin 48K (or Spectrum 48K). Briefly we can say that the current version is a Spectrum 48K with 128K RAM, sound chip and uses a Spectrum + 128K ROM.

    It is possible have a more accuracy Spectrum +128K clon doing some modifications designed by Superfo. These modifications require cutting tracks and add some more components.

Superfo Harlequin 128K scheme



Note : Superfo recommended to use a good DC-DC converter to avoid small screen interferences produced by typical noise of these type of regulators.

Superfo Harlequin 128K PCB



    This photo shows the board inside a Spectrum 48K case. You also can see the RESET button and the joystick port.

    Another difference with Harlequin 48K or Spectrum 48K is EAR and MIC connector. In Harlequin 128K , MIC connector is used for stereo output sound and EAR connector is use for EAR and MIC signal (It uses stereo jack 3,5" connector).

Documentation

    Rev 1B. Harlequin 128K schemes.
    Rev 1B. Harlequin 128K list of components.
    Rev 1B. Harlequin 128K GERBER files.
    Spectrum +128K modifications. To have a more accuracy Spectrum+128K clone.

Thanks to

    Superfo. He made this proyect and give his work for free for hobby builder.

2016 José Leandro Novellón Martínez